This newest 5W BF-888S Two-Way Radios FM Transceiver Flashlight Radio Walkie Talkies. Waterproof， Anti-broken. With Flashlight and Radio. Big communication Range， Communication Range about 6km. Battery 1500MAh， Battery Life(5-5-90 duty cycle) About 8 hours. Frequency Range UHF 400-470MHz. Channel Capacity 16.