SHARKK Cube Waterproof Bluetooth Speaker 3W IPX5 Shower Speaker Wireless Portable Speaker Solidly built with a rugged design and a 3W passive subwoofer Comes with Bluetooth capability and AUX in port for hands free phone calls. Comes with strap for maximum portability and a waterproof frame protects against mild rain and dust Continuous, uninterrupted playtime---up to 8 hours with a full recharge in 5 hours. Compatible with Apple, Android/Windows smartphones, iPads and most Bluetooth devices.