... ,UPS,EMS,TNT,FEDEX 4,MOQ:100 PCS 5,Portable,Vogue Style . Water resistant MP3 Player with Hi-Speed USB ModelWater Resistant MP3 ... : 13.5mm, dometype(CCAW adopted)InterfaceUSB mini-B jackHi-Speed USB(USB 2.0 compliant)Operation temperature5°C to 35°CPower sourceBuild-in rechargeable ... : Approx. 10 hoursColorWhite, black, green, Pink, blueMassApprox. 35g(Approx.1.3 oz)Weight:32g per unit; 104g per set