The Sony SRS-XB40 is a 27.9cm wide Bluetooth speaker with integrated lights and a battery life of 24 hours. Thanks to the integrated multi-colored wire, speaker, and stroboscope lights, you won't only hear the beat, but also see it. Control the music, lights, and DJ effects via the Fiestable smartphone app. Thanks to the Extra Bass, you can enjoy a powerful bass sound. The splash proof design means you can bring the speaker on a boat, to the pool, or to the park. If you want to go all out, you can interconnect up to 10 wireless Sony speakers via Bluetooth with the Wireless Party Chain. The music and lights are synchronized.