Bluetooth Speaker Waterproof Shockproof Mini Portable Sport Speaker Wireless HIFI Speaker Built-in Mic Handsfree Support USB TF Card Shower Speaker Powerful HD Sound: Powerful high-definition 5-watts of sound full clarity, enhanced super bass and no jitters via latest Bluetooth 4.0 technology, compatible with most Bluetooth-enabled devices. Waterproof and Shockproof:The well-structured rock solid design can prevent considerable damage and against splashing water. Long-lasting: Built-in rechargeable battery for up to 6 hours of playback time features a built-in microphone for a clear-sounding handsfree experience. Multi-Function: Built-in mic for hands-free call,There is a hook on the top,easy to hang the sound when have outdoor activities. Universal Compatibility: Compatible with a variety of electronic devices inlcuding Apple iPhones, iPads, iPods, Macbooks, PC Laptops, Samsung Galaxy, Samsung Galaxy Note, Google Nexus, Nokia Lumia, Motorola, HTC & Other Android Tablets.