UIUIUS Portable Waterproof Bluetooth Speaker with 12W Loudspeaker with Super Bass 15 Hours Playtime for iPhone 7 Plus 6 6s and More (Blue) POWERFUL SOUND: Portable wireless Bluetooth speaker lets you experience powerful sound with deep, heart-pounding bass, with the built-in speakerphone, you can take calls out loud with clear sound. 15-HOUR RECHARGEABLE BATTERY: Rechargeable lithium-ion battery provides up to 15 hours of playing time that gives you non-stop music, Sharing music wirelessly from your iPhone, iPad or any bluetooth deviceswherever you go Advanced 4.0 technology provides stutter-free wireless music streaming and seamless high clarity audio IPX4 waterproof level make sure your best enjoying on hiking, sporting,traveling and on beach as well! A touch friendly silicone cover, more safe when dropped or falling down,so safe and surf! Music Tube is becoming more and more popular in Apple Store, Airport duty-free shop and high-end physical stores, which are rated as one of the top 10 outdoor bluetooth speakers by renowned Music Evaluation Institutions