Specifications:Advanced bluetooth-compatible 5.0 technology, HiFi sound quality, clear call.The charging box is small and portable, you can put it in your pocket when you go out.Supports memory pairing, and the earphones can be used separately or together.A nice gift for your friends.Item Name: Wireless EarphonesMaterial: ABSBluetooth Version: 5.0Transmission Distance: 10mBattery Capacity: 40mAh for Earphone, 1800mAh for Charging Box (Included)Charging Voltage/Current: DC 5V/1ATalk Time: about 3 HoursPlayback Time: about 2.5 HoursCharging Time: about 1 HourSupported System: All Bluetooth-enabled Mobile Phones and Other DevicesFeatures: Wireless, bluetooth-compatible 5.0, Bone Conduction, with Charging BoxEarphone Size: 28.3mm x 17.7mm x 16.5mm/1.11" x 0.70" x 0.65" (Approx.)Charging Box Size: 84.8mm x 55.7mm x 30.6mm/3.34" x 2.19" x 1.20" (Approx.)Notes:Due to the light and screen setting difference, the item& 39;s color may be slightly different from the pictures.Please allow slight dimension difference due to different manual measurement.Package Includes:2 x Wireless Earphones1 x Charging Box1 x Charging Cable1 x User Manual