Powerful stereo sound With big bass and clear highs, your outdoor sound has never been so close to the concert floor. Anker Soundcore Select Pro is an outdoor speaker that delivers loud sound and clear high frequencies; Your outdoor audio has never been so close to the concert floor. IPX7 waterproof and floats IPX-7 protection means the Select Pro is okay with getting a soak. Knock it in the pond? No problem. Watch it float as your music continues to play without missing a beat. BassUp technology Turn up the bass and really feel the low. BassUp transforms your music into powerful bass at your command. Play up to 16 hours With up to 16 hours of playtime from a single charge, the Select Pro keeps the party going all night long; And the next morning. PowerIQ technology Anker's PowerIQ charging technology charges your phone while you relax with jams. Customizable sound and lighting via the Soundcore app Use the Soundcore app on your phone to fully control the sound profile and LEDs.