JBL Xtreme Portable Wirelesss Portable speaker in blue, black and red colors, is a high-end portable speaker with superior sound quality. Built-in rechargeable battery delivers up to 15 hours of music playback. It is a comprehensive portable Bluetooth speaker that delivers surprisingly powerful, room-filling stereo sound everywhere. You can trust JBL Xtreme to bring the excitement wherever you need it - whether indoors or outdoors, poolside party or backyard barbeque. This ultra-compact speaker is powered by a 10000 mAh rechargeable Li-ion battery.