The speaker thickness of these sleep headphones’ Bluetooth eye mask is only one-third of the average speaker, which is very comfortable for side sleepers. With Bluetooth V5.2 technology and high-quality components, this model of Bluetooth sleep mask produces incredible sound quality with deep bass and crystal clear treble. Built-in premium high-performance battery. Update the capacity from 200 to 240mah and charge via USB Cable, charge about 2-2.5 hours and can provide more than 9 hours of playing time. If you fall asleep with it on and the battery runs down, this sleep mask with Bluetooth headphones won’t beeps to wake you up, you can sleep peacefully all night. Wearing this sleep-head eye mask, insomnia will disappear as you allow your natural melatonin to flow and drift to sleep. With a total block-out design, this Bluetooth eye mask is perfect for Relaxation, Insomnia, Air Travel, Car travel, Yoga, Noontime Snooze, Audio Books, AMSR, Meditation, and Kids’ Bedtime Reading.
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