ZENBRE Bluetooth Speakers, D6 Bluetooth 4.1 Waterproof IPX6 with 18h Play-time, 10W Dual Driver with Bass Resonator, Handsfree Calling, Shockproof Portable Speaker(Black) Stereo Sound Quality, 5W/45mm DriverStereo bright sound with double 5W/45mm driver and dual resonator makes the incredible audio performance, high definition boost your listening experience. IPX6 WaterproofWith an IPX6 certified water proof rating, ZENBRE D6 is protected from rainfall, splashing. Its rugged exterior and impact-resistant frame make it ready for hiking, sporting, traveling, even on beach and everywhere what you like. An ultra-compact design type, fully portable not only could be placed indoor, but also could be hold in your palm hook at bag or bicycle, which enable to enjoy your time outdoor! Bluetooth 4.1, Lightning Connection,Power-Saving, Compatible Echo DotPortable bluetooth speaker, Bluetooth 4.1. Advanced Bluetooth tech offers an extended 33ft range (outside) so you can take your phone further without losing connection and make hands-free calls with the built-in mic.The high speed ensures the connection less than 3s. Furthermore, allow speaker automatically connect with last device. A 3.5mm audio cable for multi connection way. Less limit, More enjoy! 18h Play-time, Durable Li-Polymer battery A Li-Polymer battery capacity, make sure at least 18h Play-time from the built-in, high-capacity polymer battery. Universal Compatibility, Sync Echo DotAn universal compatibility enable D6 not only sync with AndroidIOS, Windows, cell phone, tablet,laptop, computer and PC, Abut also with any other Bluetooth device which include extra Bluetooth receiver dongle and Eho Dot.