Exclusive and unique technique to develop this noise killer earphone with Microphone! No background sound or noise be received through the microphone, so the receiver side will not hear your background sound or noise. It totally only your sound be sent out to the receiver. WORLD ONLY FUNCTION FOR BLUETOOTH EARPHONE!! Act like you are located in very quiet area and no one know you where you are!! Extremely suitable for noisy environment require to calling or receiving phone calls. Tremendous function ever!!
Colorful 2.4g wireless earphones features: 1.Chatting online; 2.Transmission range:larger than 10m; 3.Sound:full acoustic fidelity and strong bass voice; 4.Invisible noise reduction mic inside guarantees acoustic fidelity; 5.Battery:180 hours long standby/lithium battery inside lasts for 8 hours; 6.Intelligence code system:share music online with friedns with one emitter. Detailed specifications: 1.Frequency range(ghz): 2.404~2.476. 2.Avaiable range(m): 10.. 3.Baud rate(bps): typ:4m.. 4.Successive working time: about 8hours. 5.Battery: chargeable lithium-ion polymer battery (3.7v/320ma/h)... Two part:...Speaker parameter: 1.Speaker diameter: 40mm.. 2.Impedance: 32 3.S.P.L: 118db s.P.L.At 1khz.. 4.Rated power:20mw...... 5.Aggregate capability:40mw.. 6.Frequency response:20hz-20, 000hz Microphone parameter. 1.Microphone unit: 4*1.5mm.. 2.Directivity:omnidirectional. 3.S.P.L:-58 4.Impedance: 5.Frequancy response:30hz-16, 000hz.. 6.Operating voltage:3.0v. Blister and papercard
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