GRACE Digital Audio GDI-AQRCK400 Rock Sounder - Weatherproof Wireless Rock Speakers

Place your wireless Rock Sounder speaker from Grace Digital Audio on your patio, in your garden, or in the grass. Listen to up to 7 hours of "rocking" music on a single charge from up to 150 feet away. The Rock Sounder can be played via the built-in included rechargeable battery or plugged into the wall outlet (adapter included). The Rock Sounder will even play while being charged. The included wireless transmitter is dual powered (AC power adapter included, AA batteries not included) and can be plugged into your stereo, iPhone/iPod, MP3 player or TV.