Brand Wecan Model KC-M3 Color Silver + Blue Material ABS + aluminum alloy Quantity 2 Frequency Range 400~470MHz Channel 20 Frequency Stability +/- 30 ppm Output Power H: 2 / L: 0.5 W Working Voltage 3.6 V Working Distance 6000 m Encryption CTCSS Battery Capacity 1200 mAh Features Ultra-thin Ultra-clear 20 channels working distance 6000m Other 1 Countries frequency standards are optional; 2 38 groups of CTCSS + 61 groups of CDCSS interfered elimination code setting; 3 Channel display function; 4 CALL voice send function; Fresh appearance compact simple operation easy to carry Packing List 2 x Interphones 2 x AC power charger adapters (US plug / 100~240V) 2 x USB cables (79cm) 2 x Lithium Batteries 2 x Antennas 2 x Back clips 2 x Screws 1 x Chinese user manual