NUU Wake Waterproof Bluetooth Speaker (Gray) 2 woofers, 2 tweeters for Superb Sound Quality NUU Wake is the ultimate outdoor companion! Wake is IP57 tested and approved, providing 100% waterproof protection that can withstand drops, dunks, and the most severe outdoor elements. Wake is not only submersible and stylish, but ultra-rugged and built to stand up to the toughest environments. With its strong housing, protective rubber casing and an integrated handle, Wake is designed especially for adventurous lifestyles. Wake eliminates the need to lug around separate batteries or wires that can get tangled up. Stream your music with Bluetooth Listen for up to 7 hours with a built-in rechargeable Li-ion battery. Charge your phone or mobile device with Wakes universal USB power port even if its running on battery power. A tough design doesn't mean compromised sound quality. Wake has two 10W speaker drivers, DSP to improve bass performance, combined with a passive bass radiator allow it to pump out big sound with full bass that goes the distance. Wake is also smart enough to float! It wont end up at the bottom of the lake like so many other rugged speakers!