Create the perfect party vibe with the Altec Lansing Shockwave 200 Wireless Party Speaker. The 180W powerhouse makes it the ideal speaker for large gatherings, and the built-in multi-LED party modes can be adjusted to beat, strobe, or pulse to the music. The Shockwave 200 can be horizontally or vertically played for added flexibility. With up to 12 hours of battery life, Multi-Bass Mode, and Party Sync Modes, the Shockwave 200 is the ultimate party companion. Party Sync Mode: Pair up to 50 speakers together for bass boosting sound. Built-in AM/FM Radio;