Tenq&reg; Baofeng Bf-888s Uhf 400-470mhz 16ch Ctcss/dcs with Earpiece Handheld Amateur Radio Walkie Talkie Two Way Radio Long Range Black 4 Pack Frequency Range: 400-470MHz; Low battery alarm; 50 CTCSS/105 CDCSS Power-saving features to extend battery life 1500mAh Li-ion battery; Low Voltage Alert; Intelligent Charging CTCSS/DCS function/Scanning function/Emergency alarm function Range up to 3 miles (5 km) depending on environment and terrain