Ultra-thin and soft elastic sleep mask with Bluetooth headphones, crafted from satin silk for comfort. Features a built-in battery (200-500mAh), Bluetooth v5.3, and IPX-4 waterproof standard, ensuring wireless music enjoyment while sleeping.
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: 2.4-2.4835 GHz
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 5VMaximum input current: 150mah
