Splashproof +Rugged 3W Speaker Bluetooth Wireless Audio Connection for use with Smartphones and other Smart Devices 5+ Hrs playtime 400 mAh rechargeable battery Lanyard included 5V USB Input 1.0 A Power 3.7V, 400mAh Lithium Battery Over 5 hours playtime Fully re-charges in approx. 2 hours What's in the box x 1 Speaker x 1 Charging Cable x 1 Lanyard