Bluetooth version: 5.0
Bluetooth protocol: AGHSP
Bluetooth transmission distance: 10 meters
Headphone channel: Stereo (2.0)
Music playback time: 7 hours at maximum volume, 10 hours at medium volume
Microphone distance: 1 meter
Bluetooth standby time: 72 hours
Battery capacity: 180ma/h
Battery power: 0.55W
Speaker impedance: 32 ohms
Speaker power: 0.02W
Frequency range: 2.4-2.4835GHz
Sensitivity: 45db
Transmitting 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 Packaging includes:

1 x 3D Eye Mask
1 x USB charging cable
1 x Instruction manual