Product Name: automatic dial telephone Product Type: JWAT137 Communication system: Switchboard Defend Grade: IP65 Dimensions:287.5 135 75 Material: Stainless steel 304 Color: stainless steel qualities Electronic sample: APPLICATION Suitable for inside prisons, labor camps, drug rehabilitation and other intercom, communication and other places which need monitoring. FEATURES 1. The phone can form an independent telephone communication system with program-controlled switches and couplers. 2. The phone can be connected directly to the telecommunications network. 3. After the composition of the call system, each phone is an independent station. The malfunction of any phone doesnt affect the whole system work. 4. After the composition of the call system, the product has an automatic gain function, and the voice does not vary with distance or telephone quantity. 5.Telephone circuits within the integrated circuit using internationally accepted double-sided, with hair the exact number, call clarity, job stability, etc. 6. Stainless steel housing, high mechanical strength, strong impact. 7. Key parts of the handset and the hooks are both produced by our own company; Quality control strictly; After-sale reaction fast.
Name:JWAT904 Product Name: Weatherproof Telephone Product Type: JWAT904 Communication system: Switchboard Protection: IP66 Dimensions: 510 294 206 Material: Engineering plastics Color: customized APPLICATION Widely used in the place of water proof, moisture proof, fire proof, anti-noise, dust proof, antifreeze, such as subway, highways, power plants, gas stations, docks, steel companies, etc. FEATURES 1. Support SIP 2.0 (RFC3261) and SIP-related RFC. 2. Speech Coding: G.711A / u, G.7231 high / low, G.729a / b, G.722, G.722.1, G.726. 3. Echo cancellation: Support G.168, full duplex, support VAD, CNG. 4.DTMF to support: SIP info, DTMF Relay, RFC2833. 5. Support SIP application, including SIP Call forward / transfer (blind / attended) / hold / waiting / 3 way talking. 6. Support server conference. 7. Support path, gruu. 8. Support SIP Privacy. 9. Support xDSL PPPoE, and supports break automatically redial. 10. Support VLAN (DATA VLAN and VOICE VLAN). 11. Support STUN client. 12.WAN port supports primary and secondary DNS servers, support for DHCP mode can be selected using the dynamically obtained DNS DNS address or use a static configuration. 13.Support DHCP Client on WAN port. 14. Support DNS Relay, SNTP Client, Firewall. 15.Qos support Diffserv. 16. Support command network tools: Including ping, trace route, telnet client. 17. By IPBPX, it enables group calls, broadcast function. 18.Patented designed telephone housing with waterproof and dust-proof function; waterproof cover, beautiful and practical. 19.Engineering plastic shell, waterproof, dust-proof performance, strong corrosion resistance. 20.High temperature electrostatic spray of the shell surface with anti-static ability and eye-catching color. 21.Key parts of the handset, the hook, the keyboard are produced by our own company; strict quality control and fast after sale reaction.
Product Name: E xplosion-proof telephone Product Type: JWBT811 Ex Mark: Exde[ib]ib IIB T6/DIP A20 TA,T6 Communication System: Switchboard Defend Grade: IP65 Dimensions: 343,294,206 Material: Aluminum alloy Color: Yellow (customized) APPLICATION 1. Suitable for explosive gas atmospheres Zone 1 and Zone 2. 2. Suitable for IIA, IIB explosive atmosphere. 3. Suitable for dust Zone 20, Zone 21 and Zone 22. 4. Suitable for temperature class T1 ~ T6. 5. Widely used in oil exploration, chemical, military, pharmaceutical, oil refining and other hazardous environments and depots, offshore oil platform, oil tankers and other places . FEATURES 1.The phone can form an independent telephone communication system with couplers and program-controlled switches. 2.The phone can be connected directly to the telecommunications network. 3. After the composition of the call system, each phone is an independent station. The malfunction of any phone doesn't affect the whole system work. 4. After the composition of the call system, the product has an automatic gain function, and the voice does not vary with distance or telephone quantity. 5.Patented designed telephone housing with waterproof and dust-proof function; waterproof cover, beautiful and practical. 6.Telephone circuits within the integrated circuit using internationally accepted double-sided, with hair the exact number, call clarity, job stability, etc. 7. Aluminum alloy housing with high mechanical strength, and impact resistance. 8.High temperature electrostatic spray of the shell surface with anti-static ability and eye-catching color. 9. Key parts of the handset, the hook, the keyboard are produced by our own company; strict quality control and fast after sale reaction .
Product Name: waterproof telephone Product Type: JWAT302 Communication system: Switchboard Protection: IP65 Dimensions: 510 294 206 Material: Aluminum alloy Color: Yellow(customized) Electronic sample: APPLICATION 1. Widely used in the place of water proof, moisture proof, fire proof, anti-noise, dust proof, antifreeze, such as subway, highways, power plants, gas stations, docks, steel companies, etc. 2. For high-noise places . FEATURES 1.When the called party's phone rings, the alarm light will blink. That makes users easily know which phone set rings. 2.The phone can form an independent telephone communication system with couplers and program-controlled switches. 3.The phone can be connected directly to the telecommunications network. 4.After the composition of the call system, each phone is an independent station. The malfunction of any phone doesn't affect the whole system work. 5.After the composition of the call system, the product has an automatic gain function, and the voice does not vary with distance or telephone quantity. 6.Volume adjusted of the amplifier. 7.Patented designed telephone housing with waterproof and dust-proof function;waterproof cover, beautiful and practical. 8.Telephone circuits within the integrated circuit using internationally accepted double-sided, with hair the exact number, call clarity, job stability, etc. 9. Aluminum alloy housing with high mechanical strength,and impact resistance. 10.High temperature electrostatic spray of the shell surface with anti-static ability and eye-catching color . 11. Key parts of the handset, the hook, the keyboard are produced by our own company; strict quality control and fast after sale reaction.
Product Name: Jail telephone Product Type: JWAT133 Communication System: Switchboard Defend Grade: IP65 Dimensions: 287.5 Ã? 135Ã? 75 Material: Stainless steel 304 Color: stainless steel qualities Electronic sample: APPLICATION Suitable for inside prisons, labor camps, drug rehabilitation and other intercom, communication and other places which need monitoring. FEATURES 1. The phone can form an independent telephone communication system with program-controlled switches and couplers. 2. The phone can be connected directly to the telecommunications network. 3. After the composition of the call system, each phone is an independent station. The malfunction of any phone doesnt affect the whole system work. 4. After the composition of the call system, the product has an automatic gain function, and the voice does not vary with distance or telephone quantity. 5.Telephone circuits within the integrated circuit using internationally accepted double-sided, with hair the exact number, call clarity, job stability, etc. 6. Stainless steel housing, high mechanical strength, strong impact. 7. Key parts of the handset and the hooks are both produced by our own company; Quality control strictly; After-sale reaction fast. 8.Volume can be adjusted. 9.Theres an area to place an instruction card in front of the telephone.
NEC DT500 DTK digital phones NEC DTK-24D-1P Phone NEC DTK-12D-1P, NEC DTK-6DE-1P NEC 8LK-KP, NEC DCK-60-1P DT500 Handsets, DT500 Handset Cords NEC DT400 Digital Phones NEC DT400 DTZ digital phones NEC DTZ-32D-3 Phone NEC DTZ-24D-3, NEC DTL-12D-3 NEC DTZ-8LD-3, NEC DTZ-6DE-3 NEC DTZ-2E-3, NEC DTZ-8R-1 NEC DT300 Digital Phones NEC DT300 DTL digital phones NEC DTL-8LD-1 DESI-less NEC DTL-32D-1, NEC DTL-24D-1 NEC DTL-12D-1, NEC DTL-6DE-1 NEC DTL-2E-1, NEC DTL-8R-1 Long Range Cordless EnGenius DuraFon Long Range Cordless Phone DuraFon PSL Pro SIP DuraWalkie UHF-HC FreeStyle2 FreeStyle1 DuraFon PSL, DuraFon Pro DuraFon SIP 4-Line IP Phone FreeStyl 2, FreeStyl 1 DuraFon-UHF, DuraWalkie NEC DT900 IP Phones NEC DT900 Series ITK IP phones ITK-24CG-1P, ITK-6DG-1P, ITK-6DE-1P NEC ITK-32TCG-1P, NEC ITK-8TCGX-1P NEC 32LCG-IP, NEC ITK-8LCX-1P NEC ITK-12DG-1P, NEC ITK-12D-1P NEC DT800 IP Phones NEC DT800 Series ITZ digital phones ITZ-12D-3, ITZ-24D-3, ITZ-32D-3 ITZ-8LD-3, ITZ-32DG-3, ITZ-24DG-3 ITZ-12DG-3, ITZ-8LDG-3, ITZ-32CG-3 NEC ITZ-24CG-3, NEC ITZ-12CG-3 NEC DT700 IP Phones NEC DT700 Series ITL IP phones NEC ITL-320C-1, NEC ITL-8LD-1 NEC ITL-32D-1, NEC ITL-24D-1 NEC ITL-12D-1, NEC ITL-6DE-1 NEC ITL-2E-1, NEC ITL-8R-1 Polycom Conference Phones Polycom conference phones SoundStation 2, IP 5000, IP 6000 IP 7000, SoundStation Duo, Nortel, Norstar, VTX 1000, Avaya, SoundStation 2W Wireless Nortel M3900 phones Nortel M3900 phones 3900 telephones M3904 Phone, M3903, M3902 M3901, M3905, KBA M3900 Phone Accessories Norstar Phones T-Series Nortel Norstar T-Series phones T7316e, T24 KIM CAP T7208, T7100, T7316 T7406, T7406E Norstar Phones M-Series Nortel Norstar M-Series phones
NEC DT500 DTK digital phones NEC DTK-24D-1P Phone NEC DTK-12D-1P, NEC DTK-6DE-1P NEC 8LK-KP, NEC DCK-60-1P DT500 Handsets, DT500 Handset Cords NEC DT400 Digital Phones NEC DT400 DTZ digital phones NEC DTZ-32D-3 Phone NEC DTZ-24D-3, NEC DTL-12D-3 NEC DTZ-8LD-3, NEC DTZ-6DE-3 NEC DTZ-2E-3, NEC DTZ-8R-1 NEC DT300 Digital Phones NEC DT300 DTL digital phones NEC DTL-8LD-1 DESI-less NEC DTL-32D-1, NEC DTL-24D-1 NEC DTL-12D-1, NEC DTL-6DE-1 NEC DTL-2E-1, NEC DTL-8R-1 Long Range Cordless EnGenius DuraFon Long Range Cordless Phone DuraFon PSL Pro SIP DuraWalkie UHF-HC FreeStyle2 FreeStyle1 DuraFon PSL, DuraFon Pro DuraFon SIP 4-Line IP Phone FreeStyl 2, FreeStyl 1 DuraFon-UHF, DuraWalkie NEC DT900 IP Phones NEC DT900 Series ITK IP phones ITK-24CG-1P, ITK-6DG-1P, ITK-6DE-1P NEC ITK-32TCG-1P, NEC ITK-8TCGX-1P NEC 32LCG-IP, NEC ITK-8LCX-1P NEC ITK-12DG-1P, NEC ITK-12D-1P NEC DT800 IP Phones NEC DT800 Series ITZ digital phones ITZ-12D-3, ITZ-24D-3, ITZ-32D-3 ITZ-8LD-3, ITZ-32DG-3, ITZ-24DG-3 ITZ-12DG-3, ITZ-8LDG-3, ITZ-32CG-3 NEC ITZ-24CG-3, NEC ITZ-12CG-3 NEC DT700 IP Phones NEC DT700 Series ITL IP phones NEC ITL-320C-1, NEC ITL-8LD-1 NEC ITL-32D-1, NEC ITL-24D-1 NEC ITL-12D-1, NEC ITL-6DE-1 NEC ITL-2E-1, NEC ITL-8R-1 Polycom Conference Phones Polycom conference phones SoundStation 2, IP 5000, IP 6000 IP 7000, SoundStation Duo, Nortel, Norstar, VTX 1000, Avaya, SoundStation 2W Wireless Nortel M3900 phones Nortel M3900 phones 3900 telephones M3904 Phone, M3903, M3902 M3901, M3905, KBA M3900 Phone Accessories Norstar Phones T-Series Nortel Norstar T-Series phones T7316e, T24 KIM CAP T7208, T7100, T7316 T7406, T7406E Norstar Phones M-Series Nortel Norstar M-Series phones M7100, M7208, M7310 M7310 BLF, M7324, CAP M-Series Handsets Meridian Small/Home Office Aastra Meridian small office home office analog business Centrex phones 9000 8000 Vista Series M9417, M9316, M9216 M9120, M9116LP, M9110 M8009, M8004, Vista 480e Nortel 1100 IP phones Nortel IP phones 1100 Series 1140e VoIP telephones 1110, 1120e, 1140e, 1150e, 1165e, Expansion Module Nortel 1200 IP Phones Nortel IP phones 1200 Series IP 1230 VoIP telephones 1210 IP, 1220 IP, 1230 IP Key Expansion Modules, 1200 Phones Power Supply Nortel i2000 IP Phase 2 Nortel IP phones i2000 Phase 2 i2004 VoIP telephones i2001 IP, i2002 IP, i2004 IP, i2007 IP, 2033 Conference, KEM Module, Power Supply Nortel i2000 IP Phase 1 Nortel IP phones i2000 Phase 1 i2002 VoIP telephones IP 2001, IP 2002, IP 2004, Key Expansion Module KEM, i2000 Phones Power Supply Nortel M2000 Phones Meridian PBX phone M2616, M2216 M2008, M2006, M2317 M2250 Console, M2000 ATA Meridian Digital Centrex Aastra Meridian Centrex phones Aastra M5008, Aastra M5208 Aastra M5216, Aastra 5316 M522 Expansion Module Wireless Headsets Plantronics wireless phone headsets
Type/ Specification Rated Voltage (V) Rated Current (A) Max Analysis Capability(KA) (conΦ=0.35) Electrical Life(times) Mechanical Life (times) Overall Size L�W�H Weight (kg) 1140V 660V KBZ-500/ 1140(660) 1140 500 9 12.5 3000 15000 950�583�982 500 KBZ-630/ 1140 660 600 12.5 15 3000 15000 KBZ-200/ 1140(660) 1140 200 4.5 7.5 3000 15000 791�531�836 320 KBZ-400/ 1140 660 400 7.5 9 3000 15000 KBZ9-200/ 1140(660) 1140 200 4.5 7.5 3000 15000 605�493�826 160 KBZ9-400/1140 660 400 7.5 9 3000 15000 -
Corded telephone, wireless telephone; caller id telephone, sms and two-line telephone, hotel and business telephone, the fixed station telephone where the three nets of gsm/cdma/fixed net are inter-related, mobile business telephone, and coin /ic card, intelligent public telephones.
1.CPU:Mediatek MTK6789 Octa-core Helio G99 2.0GHz, 6nm process; 2.Operation System: Android 12.0; 3.Display: 6.78 inch Capacitive Multi-touch screen,IPS FHD+ 2400*1080 Pixels; 4.4G LTE Networks: GSM: B5/B3/B8/B2,WCDMA:B1/B2/B4/B5/B6/B8/B19, 4G:TDD:B34/B38/B39/B40/B41,4G FDD:B1/B2/B3/B4/B5/B7/B8/B12/B13/B17/B18/B19/B20/B25/B26/B28(A+8)/B66/B71 5.Four Cameras: Front 20Mpxls camera, Back 64MP+20MP(Night vision camera)+2Mp Macro Cameras. 6.Memory & Storage: 12GB ram + 256GB ROM; 7.Wireless Network:802.11 a/b/g/n/ac 2.4G+5G Dual-band wifi wireless and Blutooth 5.0; 8.GPS:Support GPS and GLONASS+Beidou; 9.Battery: 3.85 V/9800mAh Lithium Battery; 10.Tri-Proof Rate: IP68 Waterproof and dustproof, DropProof Rate: GIL-STD-810G. 11.Sensors:G-sensor,Light sensor,Proximity sensor,E-Compass, Gyroscope Sensor,ect.; 12.Side Fingerprint & Face recognition unlock function: Support; 13.I/O Port: Type-C USB; 14.NFC: 13.56Mhz; 15.Dimension: 177.3*84.3*18.4mm.
1.CPU:Mediatek MTK6762 Octa-core 2.0GHz; 2.Operation System: Android 13 with google service; 3.Display: 6.08 inch Capacitive Multi-touch screen,IPS HD+1560*720 Pixels; 4.4G LTE Networks: Support 2G GSM: B5/B3/B8/B2,3G WCDMA:B1/B8, TDD LTE: B38/B40/B41,FDD LTE:B1/B3/B5/B7/B8/B20/B28A; 5.Two Cameras: Front 20Mpxls camera, Back 20Mpxls Camera. 6.Memory & Storage: 4GB ram + 128GB ROM,or 6GB+128GB is optional; 7.Wireless Network:802.11 a/b/g/n 2.4G+5Ghz wifi wireless and Blutooth 5.0; 8.GPS:Support GPS+GLONASS or GPS+Beidou; 9.Battery: 3.8V/5000mAh Lithium Battery; 10.Rugged Durability: IP68 Waterproof and dustproof, DropProof Rate: MIL-STD-810G. 11.Fingerprint sensor:Support unlock; 12.NFC: 13.56Mhz,Support ISO14443A/B/15693; 13.PTT function: support; 14.SOS function: support; 15.Explosion-proof: II 2G Ex ib IIB T4 Gb, ATEX Cert.:ECM22 ATEXB DD57; 16.Dimension: 159.2*76.3*13.1mm.
1.Caller ID for C.O Lines and extension,telephone number is not lost when transferring . 2.Outline calling on duty manual/automatic mode,Ringtone mode. 3.Three-section of digital recording can be 20 seconds .¡ê¡§optional 30s-90s). 4.When calling no one answer or the line is busy can be transferred . 5.Calling level for extension and the talking time is limited . 6.The extension number ranges can be mixed . 7.Outline or inline calls can be answered the Phone for Others , transfer, retention, monitor . 8.Checking telephone caller id number and voice checking . 9.Automatic IP dial-up . 10.Call center function, extension hotline number, Ringtone function. 11.Automatic on duty and abbreviated dialling . 12.Remote maintenance, hardware self-tested .
Application specification Model: knsp-01 Defend grade: gb 4208-93 ip 66 Call capability of phone: gb/t 15279-94 Application scope: metro, light railroad, speedway, ship, mine, etc. External configuration specification: External dimension: 320. 205. 120mm weight: 5. 5kg Installment dimension: 139. 260mm m8 bolt is used to install Upper cover Sealing circle Handset Ring hole Main body Keyboard Middle cover board Logo optional Cover spring Connection soft tube for wiring Main features of prod Cabinet aluminum alloy die. Casting. High anti. Violent, able to glisten, convenient for looking for. Optional Door cover. Orient automatically and good self. Closing. Convenient for use. Handset. Made of special engineering plastic. High anti-knock resistance. High tensile strength resistance and high anti-violent. All of the components including handset telephone receiver and transmitter. Keypad. Buzzer. Circuit board and cabinet are designed to be multi. Ayer waterproof and dust. Proof which is up to class iii grade. The whole machine is up to national standard gb4208. 93 ip 66. Phone is provided with high stability. High anti-jamming capability. And it is up to national standard 15279-94. Main technical indexes Applicable for various types of spc exchange and dispatching
1. Noise cancelling microphone with superior audio clarity. 2. Newly designed structure with light weight and durability. 3. Stylish appearance design. 4. Big ear pad and soft ear cushion ensures whole-day wearing comfort. 5. Ratchet style microphone boom, easy to be adjusted. 6. Soft designed T-Pad for convenient wearing. 7. Click-stop headband for superior comfort. 8. Anti acoustic shock circuit. Marks: 1. 3 different ear cushions are available: Foam, Leatherette, Protein Leatherette. 2. Multiple connecter choices: RJ9 plug, 2.5mm, 3.5mm stereo plug, USB2.0 plug. 3. M-volume controller(with Mic Mute) is optional. 4. G-QD or P-QD 1pc per box, 50pcs per carton
Telephone pos Telephone pos processing increases sales, saves time, and reduces operating expenses. Here are just a few of the benefits of using telephone pos: (1)can accept cards where it previously was impossible (at home, in office, retail stores, etc.) (2)no second phone line needed and only one land line. (3)reduces risk. Swiping reduces chance of fraudulent or stolen card being used. (4)increased security. Telephone pos terminal processing reduces the amount of cash handle. Specifications (1)high-performance cpu; (2) communication module, support dtmf/bell 202 fsk signal; (3)4m bytes flash; (4)128*64 white backlit lcd display, with yellow-green led backlight; (5)3 tips led for power indication, sms and missed call indication and card using indication; (6)with magnetic card reader, support 2/3 track; (7)support kinds of smart ic cards and memory ic cards, following iso-7816 standard; (8)have 2 psam (purchase secure access module)card slot; (9)support serial port and external printer; (10)power supply: dc 9v adapter; (11)support battery power supply using 3 batteries; (12)two phone interface, one for telephone line , one for extension phone;
Product Name: Explosion-proof Telephone Product Type: JWAT810 Communication system: Switchboard Defend Grade: IP66 Dimensions:343 Ã? 294 Ã? 206 Material: Aluminum alloy Color:Yellow (can be customized) Electronic sample: APPLICATION 1. Suitable for explosive gas atmospheres Zone 1 and Zone 2. 2. Suitable for IIA, IIB explosive atmosphere. 3. Suitable for dust Zone 20, Zone 21 and Zone 22. 4. Suitable for temperature class T1 ~ T6. 5. Widely used in oil exploration, chemical, military, pharmaceutical, oil refining and other hazardous environments and depots, offshore oil platform, oil tankers and other places. FEATURES 1.The phone can form an independent telephone communication system with couplers and program-controlled switches. 2.The phone can be connected directly to the telecommunications network. 3. After the composition of the call system, each phone is an independent station. The malfunction of any phone doesnt affect the whole system work. 4. After the composition of the call system, the product has an automatic gain function, and the voice does not vary with distance or telephone quantity. 5.Patented designed telephone housing with waterproof and dust-proof function; waterproof cover, beautiful and practical. 6.Telephone circuits within the integrated circuit using internationally accepted double-sided, with hair the exact number, call clarity, job stability, etc. 7. Aluminum alloy housing with high mechanical strength, and impact resistance. 8.High temperature electrostatic spray of the shell surface with anti-static ability and eye-catching color. 9. Key parts of the handset, the hook, the keyboard are produced by our own company; strict quality control and fast after sale reaction
Technical Parameter Signal Voltage DC48Vï¼?Telephone line power supplyï¼? Standby Work Current â?¤0.2A Frequency Response 250ï½?3000 Hz Amplified Output Power 10ï½?25W Defend Grade IP68 Corrosion Grade WF1 Ambient Temperature -40ï½?+60 Atmospheric Pressure 80ï½?110KPa Relative Humidity â?¤95% Lead Hole 3-PG11 Weight 5.5kg Installation Wall-mount
The telephone can form an independent communication system with the program-controlled switch and coupler. can directly connect to the telecommunication network After the call system is formed, each phone is an independent workstation, and one of the failures does not affect the entire system. After the call system is formed, the product has an automatic gain function, and the size of the voice does not vary with the length of the distance or the number of the phone. Amplifier speaker sound size can be adjusted freely The patented design of the phone case is waterproof, dustproof, no need for waterproof cover, beautiful and practical. The circuit inside the telephone adopts the international universal double-sided integrated circuit, which has precise number and call. Clear, stable work and other advantages. Aluminum alloy die-casting shell, high mechanical strength and strong impact resistance. The surface of the shell is electrostatically sprayed at high temperature, with good antistatic ability and eye-catching color. The key parts handsets, cradles and keyboards are all produced by our company. The quality control is strictly controlled, and the reaction speed is fast after sale.
Incoming call numbers memories . Outgoing call numbers memories .16 digits of number of incoming call display and backlight indication .15dB speakerphone volume control .Last calling number redial .On& off button .Outer and inner ringing sound control . Flash light indicator for incoming call . Electronic calendar indication .In use indication .RJ-9 jack for headset 50pcs in one carton
Main Components 1. Shell made of Special PC/ABS. 2.304# stainless steel armoured cord or PVC coiled cord. 3. High strength steel rope. 4. Pierce-proof and hi-fi transmitter and receiver. 5. Connect the permanent seat of the case. Featuresï¼? 1. Shell is made of Special PC/ ABS 2. 304# stainless steel armoured cord or PVC coiled Cord 3. Pierce-proof and Hi-Fi transmitter and receiver Users select 1. The length of the tube is flexible,standard is 900mm, the diameter of the tube 8.4mm,7.8mm,6.5mm. 2. Connector can be chosen: Y-spade,RJ11,XH-pg,USB,Audio Jack, Aviation Joint, XLR Connector,ect. 3. High strength steel rope diameter can be chosen:standard is 1.6mm, other diameter is 2.0mm,2.5mm. 4. Handset Color: standard is black or red, other color can be customized. 5. Microphone: Electret microphone or Dynamic microphone.
