Bluetooth Sleeping Headphones Eye Mask Sleep Headphones Bluetooth Headband Soft

Bluetooth Sleeping Headphones Eye Mask Sleep Headphones Bluetooth Headband Soft Elastic Comfortable Wireless Music Earphones
Bluetooth eye mask: 
Bluetooth sleep eye mask adopts V5.0 program, binaural stereo design, comfortable cotton fabric with comfortable and soft breathability. For people with symptoms ofsleep difficulties, they can let them slowly go to sleep while enjoying music, and can also reduce the outside world. The noise disturbance provides a quiet sleeping environment, whether it is work break or sleep at night, Bluetooth sleep eye mask can help improve sleep quality, a magical sleep aid artifact!
Bluetooth connection: with iOS, Android, Mac and Windows
Model: 3D eye mask
Bluetooth protocol: V5.0
Frequency range: 20HZ-20KHZ
Charging voltage: 3.7V-4.2V
Sensitivity: 88DM
Signal to noise ratio: 90db
Speaker impedance: 32- 15%
Speaker specifications: φ30mm
Operating range: 10m
Charging time: 2H
Use time: 10H (50% volume)
Battery capacity: 200mAh lithium battery
Bluetooth search name: BT-01
Material: memory foam
Product size: 28*14cm
Retail box size: 140mm*118mm*46mm