Specifications:Bluetooth 5.0 earphone, faster and more stable.Will automatically pair, power on after taking out from the charging box.True wireless bluetooth-compatible headset, left and right channel separation, automatically connected, both ear can be used separately.Suitable for driving, working, running, fitness, travel, etc.Intelligent compatibility: support all bluetooth-compatible mobile phone, tablet, notebook, etc.Function: battery display, call function, NFC function, support music, multi-point connection.Type: bluetooth-compatible EarphoneMaterial: ABSBluetooth Version: 5.0Bluetooth Working Range: 20mPower Input: DC5VImpedance: 16Earphone Battery: 3.7V 50mAh*2Charging Box Battery: 3.7V 500mAhSensitivity: 120 5dBCall Time: About 8 HoursSupport Protocol: HSP/HFP/A2DP/AVRCPCharging Box Size: 60mm x 40mm x 30mm/2.36" x 1.57" x 1.18" (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:1 Pair of bluetooth-compatible Earphones1 x Charging Box1 x USB Cable1 x User Manual