Monster Monster 980318742 Trax Speaker with 12 Hour Playtime and Bluetooth Connectivity

The Monster Trax connects to your phone via Bluetooth or auxiliary cord and features up to 20 watts of power and 12 hours of playback. No need to worry about getting your speaker wet, the Trax is IPX67 waaterproof. It also has EZ-SYNC, to connect 2 Trax speakers together and a built-in voice-enabled speakerphone.