Bluetooth- version 5.0Frequency range 2.4GHz-2.483 GHzSupport protocol Handset, Hands-free, A2DP, AVRCPBluetooth chip JL6963ABattery capacity Headphone: 40mAh Charging stand: 1200 mAhPlaying time: about 4-5 hoursTalk time: about 3-4 hoursStandby time Standby when the headset is turned off: >6 monthsCharging time Earphone: about 1 hour, charging box: about 1.5 hoursHeadphone output power ≤5mWEffective distance 10 meters 【Barrier-free open space】Button One touch buttonMicrophone 1 condenser microphone omnidirectional -38±1dBSpeaker 1 Φ8.0mm, 32Ω±15%Speaker sensitivity 92dB±3dB at 1.0kHz/ 0.179VLED+digital display 188 display Earphone: red/blue LEDCharging box: digital display 188 display

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