JUENTAI JT-UV71 10-KM Range FRS/GMRS Dual-band Two Way Radios Walkie Talkies (Black,Set of 10) More than 10-hour rechargeable battery life, least 5000 time recharge circle Very strong waterproof, dustproof, anti vibration system Frequency Range: 136-174 / 400-520MHz DTMF Ani 128 Channels 50 CTCSS and 104 CDCSS Dual-Band Display, Dual Freq. Display Dual-Standby