Description:With a neckband design, the product can free your hands and is easy to carry.Adopting the bluetooth-compatible 5.0 chip, the product can provide better sound quality and stabler connection.Made of the premium ABS material, the product is durable, lightweight and portable.The length of the product is 15cm, the width is 10cm, and the height is 1cm.It is suitable for sports, fitness, music, etc. And the compatible systems are for Android, for iOS, for Windows.Item Name: HeadphoneMaterial: ABSBattery Capacity: 450mAh(Included)Frequency Response: 20-20000HzSupport Operating System: for Android, for iOS, for WindowsTransmission Distance: 10mBluetooth Version: Ver5.0Drive: 40mmSize Details: 15cmx10cmx1cm/5.91"x3.94"x0.39"(Approx.)Notes:Due to the light and screen setting difference, the item's color may be slightly different from the pictures.Please allow slight dimension differences due to different manual measurements.Package Includes:1 x Headphone 4 x Ear Pads 1 x Charging Cable