... F,battery. 900/1800MHz GSM FWT1803B ,with G3 Fax and LCD DisplayMain Function1. Network ,GSM/GPRS 850/1900MHz2. G3 Analog ... for making & answering calls after connection to telephone set.3. LCD Display Time,Power, Phone number, Battery, Network, Working and Signal ... (without dew)3. Atmospheric pressure: 86~106Kpa4. Environment noise: <=65dB 6. Accessorya) AC/DC Adapter Input: AC 100-240V~ 50/60Hz ...