Eye Mask Sleep Headphones Bluetooth Sleeping Headphones Bluetooth Headband Soft Elastic Comfortable Wireless Music Earphones

Bluetooth parameters:Bluetooth version: 5.0Bluetooth protocol: AGHSPBluetooth solution: Blue messageBluetooth transmission distance: 10 metersHeadphone channel: Stereo (2.0)Music playback time: maximum sound 7H, medium volume 10 hoursMicrophone distance: 1 meterBluetooth standby time: 72HBattery capacity: 180ma/hBattery power: 0.55WHorn impedance: 32 ohmsHorn power: 0.02WFrequency range: 2.4-2.4835GHzSensitivity: 45dBTransmission power: 6dBAudio output distortion: 0.6%Audio output signal-to-noise ratio: 93dBCharging time: 1-2 hoursMaximum input voltage: DC 5VMaximum input current: 150mahMaximum input power: 0.55W