Bluetooth Speaker, Mindkoo Portable Pocket Outdoor Sport IP65 Waterproof Shockproof Wireless Bluetooth V4.0 Speaker with Mic CSR for iPhone 6S Samsung S6 Smartphones (Black) 1.- [HIGH TECHNOLOGY] - Bluetooth 4.0 Technology, IP65 Waterproof, Outstanding connection range of up to 33 feet. 2.- [HIGH-DEF SOUND] - Enjoy an impressively full sound quality and robust bass realized through a 3W audio driver and passive subwoofer. 3.- [HIGH ENERGY BATTERY] - Fast charge in 2.5 hours, and enjoy 5 hours of music at 80% volume. 4.- [UNIQUE DESIGH] - This ring box-sized bluetooth speaker fits easily into your jacket pocket or the small side pocket of your backpack. 5.- [COMPATIBLE WITH] - Aux in function support all digital audio device with 3.5mm jack, such as iPod/iPhone/iPad, Cell phone, MP3, MP4, Computer, Notebook, PSP.