Product Description Material: Cotton Size: 47*11CM Color: black Battery: 180 mA Charge for 1.5 hours and play for about 10 hours Quantity: 1pcs Package content: 1*wireless bluetooth sleep eye mask 1.NEW DESIGNWe listen to your feedback, after long-term research and data, we updated every details and make better wireless music sleep headphones eye mask to fit you. 2.FIT FOR SLEEPING WITH PROBLEMThe headphones mask adopted 3D ERGONOMIC TECHNOLOGY for eyes area and block out 100% of light to create absolute dark zone and listen to music without wearing additional headphones for you sweet deep sleep, great solution to the problem sleeper. Perfect for home, office, air travel, business strip, relaxation, mediation and insomnia. 3.Featuring Updated BLUETOOTH 5.0 technology, stable connectivity and smooth transmission in high speed and long distance with low consumption for great stereo sound experience. Built-in adjustable high quality speaker and microphone for handfree and clear call. Sleeping mask can be WASHABLE you can take out the bluetooth moudle and wires out. Recommend to wash the mask by hand with warm water. 4.headphones bluetooth sleep mask is designed with breathable material and comfortable feel, BREATHABLE SLOW-REBOUND MEMORY SPONGE and smooth fabric let you release your facial stress and help get into sleep rapidly. Bluetooth control on the middle and is perfectly fit for side sleeper. 5.UPDATED BATTERYBuilt-in the premium high-performance battery Charge about 1.5 hours, provide more than 10 hours playing time, wont be waked up at night, You can sleep peacefully all night