Frequency Range: UHF 400-470MHz Frequency Stability: ±2.5ppm Channel Capacity: 16 Channels Channel Spacing: 25KHz Battery Type: 1500mAh Rechargeble Li-ion Battery Operated Voltage: 3.7 V Antenna Impedance: 50Ω Operated Temperature: -30°c-+60°c Plug: 110V-240V AC Wall-wart Type A Radio Dimensions (with battery, without antenna): 4.53 x 2.36 x 1.30 inches Antenna Length: 4.3 inches Radio Weight (with battery/antenna): 6.3 oz