BaoFeng BF-888S Two Way Radio (Pack of 20) Walkie Talkie Model: Baofeng BF-888S;16 channel; Each radio has a earpiece. High Illumination Flashlight. PC Programmable Frequency Range: 400-470MHz; Low battery alarm; 50 CTCSS/105 CDCSS.Operating Voltage:3.7 V 1500mAh Li-ion battery; Low Voltage Alert; Intelligent Charging; Voice Scramble & Encryption Power-saving features to extend battery life; CTCSS/DCS function/Scanning function/Emergency alarm function Range up to 3 miles (5 km) depending on environment and terrain