FWT:Supporting GSM 850/900/1800/1900MHz, with back-up battery storage, GPRS function, supporting reverse polarity function FWTBasic Functions1. Supporting GSM 850/900/1800/1900MHz.2. Making local calls, mobile calls, national and international calls.3. Pre-setting area code, IP number, special service number, and any other head number.4. Privilege setting for international distant and local call- ...