Your own portable music festival. Throw the SRS-XB21 in your bag, grab your friends and start the party wherever you go. With EXTRA BASS, live music sound and party lights its the mini music festival that you can take with you. The compact SRS-XB21 fits easily in your bag, you can even pop it in the bottle-holder of your bike. Hear your music in a whole new way with live sound mode. 12hr battery life so the party never stops. Waterproof & dustproof design (ip67 rated) so you can take your speaker anywhere. 1 speaker. Compatible with iPod, iPhone and iPad. Bluetooth compatible. General information Model number: srsxb21w. Ce7. Size H7.2, W19.3, D6.5cm. Mains operated. Power from USB. USB cable included. Batteries required 1 x rechargeable batteries (included). Battery life: 12 hours. (not included).