ELEGIANT Portable Bluetooth 4.0 Wireless Stereo Speaker,Waterproof/Crashproof/Dustproof with Remote Photograph Button Sports Outdoor Speaker for Smasung/iPhone and Most Bluetooth Devices(Gray) ER-163 have not only fully taken into account in the design of lightness, portable, five defense and call assistant, but also huge capacity inside 1500mah Lithium battery and convenience charging. Waterproof Dustproof Crashproof ShockproofGo anywhere you want to go with it! Remote control photograph:taking picture while listening to music and make photograph more easy! Come with bell button:while biking you can use it as bike bell and go ahead without any pullbacks Support for APE/FLAC/WAV/MP3/WMA lossless music format,play the most beautiful music for you!