Waterproof mountain bike equipment ,LED flashlight sound mp3 speaker Features:Unique sport style design,Suitable for ... during nighttime solutionBR3166body size/weight90*36*40,100gcapacity1-16 GBcolorblack,white,orange,bluespeakersupportshellplastic earphone jack3.5mm USB/spec USB 2.0 ... MHZ battery specLithium battery 800 mA Waterproof mountain bike equipment ,LED flashlight sound mp3 speaker