Description:
The mask is made of soft and comfortable material, can let you slowly enter the sleeping state with music, can also reduce the interference of external noise, provide a sleep environment quiet, whether it's work break or sleep at night.

Features:
Version 5.0 Bluetooth technology to pair your phones or smart tablets
USB chargeable and fully charge for 2 hours to provide play time up to 5-10 hours
Block the lights to make you sleep better and allows you listen to the music without additional headphones.
Extra cushion makes the mask and nose touch better 
Detachable and washable
Connect your phone and listen to music to relax while sleeping.

Specification:
Material: polyester+cotton
Size: approx.41x11cm
SNR: 90dB
Bluetooth protocol: V5.0
Operating distance: 10M
Battery capacity: 200mAh lithium battery
Charging voltage: 3.7-4.2V
Charging current: 150-200mA
Frequency range: 20HZ-20KHZ
Charging time: 2hrs
Using time: 10hrs

Package Contents: 1 X Bluetooth Sleep Eye Masks