GSM VIN-900 Wireless Telephone, which based on mobile GSM network, is a kind of new type products that collects all functions of both common fixed telephone and mobile phone. The wireless telephone can be used in rural and remote areas, but also used in temporary places such as big assembly, exhibition, and moving carrier like vehicles, vessels, railway station, and bus station. Moreover, it even provides a new competition means and guarantee for mobile operator to PSTN fixed telephone market. Main Functions & Characteristics: Suitable for 900/1800 MHz public mobile GSM network, using SIM card. Make and answer calls. Caller ID. 128*64 big LCD with four-line display to show the date and time well,electric consumption of battery and signal intensity. Support English and digits input. Dialer function inside, programmable call routing (such as you can set 193 or 17911 IP phone when launching long distance call). The phone book that can operate of viewing, editing, deleting, and adding to the telephone numbers, and it also can send short messages, view and set up the dial function by one touch key. Calling record function can store telephone records. Short messages function that supports messages editing, storing, group sending, forwarding, deleting, and text answering. Support redialing and hands-free. Multi-level volume to be chosen. Time setting, alarm clock, and calculator. Card and phone locking and phone password protection. The power supply adopts battery and external adapter. The adapter input voltage is AC110í¬240V, output voltage is DC5V. Compliant with CE & ROHS Technique Parameters: Working Frequencyú¦900/ 1800MHz Emission Powerú¦ú¿2Wú¬900MHz/ú¿1Wú¬1800MHz Working Voltageú¦3.3í¬4.6V Environment Temperatureú¦-35íí¬ 75í Working Humidityú¦45%í¬95% Atmospheric Pressureú¦86í¬106Kpa