Hign-concerned Chemical: None Output Power(w): 3w-5w Battery Capacity(mAh): 1800 Waterproof / Water-Resistant: No Material: Plastic Storage Channel: 128 Frequency Range: Tri-band,VHF:136-174MHz,200-260MHz,400-520MHz Dimensions: 58*110*32/mm Model Number: UV-5RIII Walkie Talkie Type: Portable