Powerful floating VHF with an IPX7 waterproof/submersible rating features a 6-watt transmitter and 700-mW audio. Clear Voice Boost automatically adjusts outgoing voice and audio for optimum clarity. Noise-canceling mic reduces background noise. Vibrating AquaQuake™ feature clears waterlogged speaker grills. Energy-saving circuitry extends run time up to eight hours. Includes battery pack, battery charger, AC adapter, antenna, belt clip and hand strap. Lithium-Ion battery and charger.