3D Eye Mask Music Play Sleeping Headphones with Built-in HD Speaker Mask For Sleep Headphones Bluetooth

Hign-concerned Chemical : None Type : Eyeshade Item Type : Sleep & Snoring Origin : Mainland China

Bluetooth parameters: Bluetooth version: 5.0 Bluetooth protocol: AGHSP Bluetooth solution: Blue message Bluetooth transmission distance: 10 meters Headphone channel: Stereo (2.0) Music playback time: maximum sound 7H, medium volume 10 hours Microphone distance: 1 meter Bluetooth standby time: 72H Battery capacity: 180ma/h Battery power: 0.55W Horn impedance: 32 ohms Horn power: 0.02W Frequency range: 2.4-2.4835GHz Sensitivity: 45dB Transmission power: 6dB Audio output distortion: 0.6% Audio output signal-to-noise ratio: 93dB Charging time: 1-2 hours Maximum input voltage: DC 5V Maximum input current: 150mah Maximum input power: 0.55W