The Sleep Band 2.0

Bluetooth Sleeping Headphones Sports Headband Thin Soft Elastic Comfortable Wireless Music Earphones Eye Mask for Side Sleeper

Bluetooth technical parameters:

Bluetooth transmission distance: 10m

Music playing time: Maximum sound 7h, medium volume 10 hours

Microphone distance: 1m

Bluetooth standby time: 72h

Battery capacity: 150mA / h

Battery power: 0.55w

Horn impedance: 32 ohm

Horn power: 0.02w

Frequencey range: 2.4-2.4835ghz