[Waterproof Sport Speaker] Desel Bluetooth 4.0 Portable Wireless Speaker Bass Subwoofer Sound Speaker Power Bank/ Mic / NFC Function for Outdoor Bicycle Cycling Climbing Camping Hiking Running (Black) Waterproof, Dustproof and Shockproof wireless Bluetooth speaker, metal and silicone housing design made it anti-skid, you can take it into the bathroom, waterproof grade IPX4 that is not available to totally immersed into water Features Near Field Communications (NFC) technology which allows for easy, one-touch pairing by simply tapping your NFC-enabled Bluetooth smart device on the speaker New 2 in 1 function. Powerful 3600mAh built-in polymer lithium battery provides up to 10 hours of playback time, a standard USB jack can be used as a power bank, that you can enjoy your music the same time power your electronics Bluetooth 4.0 and CSR chipset connects faster, more stable, compatible with all your Bluetooth-equipped devices, and an excellent Bluetooth range about 33 feet Built-in Bluetooth Technology - Stream Music Wirelessly - Works with Virtually any Bluetooth-Enabled Device (Smartphones, Tablets, PCs, MP3 Players, etc.)