Maxon HCB-10C 40-Channel CB Radio (Refurbished) 40 CB channels Maximum legal RF output power (4 watts) with high level modulation (in accordance with FCC Part 95 Rules) Can be used as a portable CB radio (powered by Ni-Cd or alkaline batteries) or used with provided 12V DC power cord in a vehicle or boat Accessory jacks allow "hands-free" operation when used with an optional headset with boom microphone and mini-VOX unit Phase-locked loop synthesizer provides clear voice transmission and reception on all CB channels