TeckNet S100 Ultra Mini Portable Bluetooth 4.0 Speaker with Super-Sized 3W Driver for iPhone 5S, 5C, 5, iPad Air, iPod, Samsung Galaxy S5, Mobile Phones, Tablets, PC, Laptops, Ultrabook, MP3 Players The latest Bluetooth 4.0 (fully backward compatible) for longer standby time; equipped with a 3.5mm audio jack for non-Bluetooth devices Smart Bluetooth Connection - automatically connects to your device. Compatible with all Bluetooth enabled devices Impressive 360-degree surround sound with over 7 hours of playback powered by a lithium polymer battery (3.7v/500mA) Features clear, room-filling sound and a built-in microphone for receiving voice calls totally hands-free. Package contents: TeckNet Ultra-Mini Bluetooth Speaker, USB charging cable, and user manual.