... Antenna connection D, Bottom side picture Specifications: 1) Air interface standard: GSM850/1900Mhz,900/1,800Mhz phase 2+ full band 2) ... : 890 ~ 915MHz I) Transmission: 1, 710 ~ 1, 785MHz Ii) Reception: 935 ~ 960MHz Ii) Reception: 1, 805 ~ 1, 880MHz 3) Channel space: 200kHz ... than 400mAh 7) Sensitivity: -105dB 8) Dial tone frequency: 450MHz (standard) 9) Surrounding temperature: -10°C ~ +40°C 10) ...