Features:lShape in lightweight sporty design, after hanging wear, unique and innovative designlPortable, lightweight, sporty exterior design, sports, leisure, office are free to listen tolWorking temperature: -15 to 55 lBluetooth 4.1 technologylWith CSR4.1 APT-X audio decode Technology, offering you perfect soundlSweatproof design, Ergonic earbud, comfortable to wear.lMake every drop of sweat count with the fear of damaging your headsetlBuilt in 150mAh battery, long standby and talking timelUp to 5 hours of talk time and 120 hours of standbylCrystal HD clear sound qualitylNoise isolating in-ear designlAnswers phone calls anytime anywherelCVC6.0 intelligent noise reductionlControl Music and calls from the headphonelSuitable for all kinds of bluetooth enabled devicesPackage:lSport bluetooth headsetlUsb charger cable;lFour EarbudslManual