Mini Twins True Wireless Sports Earbuds Bluetooth In-Ear Stereo HeadphonesParameterModel No.: D015Color option: black white gold, rose goldChipset power consumption: 20mABluetooth version: Bluetooth 5.0 (automatic pairing)Bluetooth range 5-8 metersEarbuds battery capacity: 40mA (501012)Charging case battery capacity: 400mA (902030) (with protection board)Playing time: 2 hoursStandby time: 30 hoursCharging time; 1 hourRF Frequency range: 2.402GHz~2.480GHz Size: 8mmSpe material: copper ringImpedance: 16 ohmsSensitivity: 99.98dB+- 5dBSignal to Noise Ratio (S/N): 90dBFrequency Range: 20Hz-20kHzMicrophone sensitivity: negative 42dBCharging voltage: DC5VCharging cable spec: 25cmMachine weight: bare machine 48gEarphone shell material:ABS, earphone shell aluminum alloyNoteThe distance between the headset and mobile phone can not be greater than 8M.The distance between the two earphones can not be greater than 50cm.Wireless Stereo Connection (TWS):Long by two headphones main buttons at the same time, until the headphones red and blue lights flashing at the same time and then loosen the button, Quickly click on the leftEarphone twice, Two ear opportunity to connect automatically. When one of the Headphones stops blinking, the pairing is complete.Turn the phone's Bluetooth function on and search for this bluetooth headset for the name(D015). Click on the pairing and wait for the pairing to complete. At another headsetRed and blue lights have stopped flashing. Indicating that the phone and headset Pairing success.Package Include:2X Bluetooth Headset1X English User Manual1X Charging Cable1X Charging Dock4X Ear cap