Brand QuanSheng Model TG-K4AT(UV) Color Black Material Plastic + aluminum plate Quantity 1 Frequency Range 136~174MHz / 400~480MHz Channel 128 Frequency Stability +/- 5 ppm Output Power 5 W Working Voltage 7.2 V Working Distance 5000~10000 m Encryption DCS CTCSS Battery Capacity 2000 mAh Standby Time 168 hour Working Time 72 hour Features Dual band; Emergency alarm function; FM radio; DTMF function Other Step frequency: 5KHz 10KHz 12.5KHz 25KHz; Working voltage: 7.2V DC; Output power: 4~5W; Current: Packing List 1 x Interphone 1 x Battery 1 x 110~240V US plug power adapter (98cm) 1 x Back clip 1 x Antenna 1 x Strap (21cm) 1 x Chinese manual