About this item Sleep Deeply Anywhere, Anytime. Insomnia will be in your past. True HD high fidelity sound featuring latest Bluetooth 5.0 technology that produces great sound quality. Upgrade usb chargeable battery, Built-in 200mAh high-performance battery, Charge about 2 hours provide more than 10 hours playing time, won't be waked up at night,enough to support the whole night. Block light to make your sleep better, allows you to listen to music without wearing additional headphones,which make you fall asleep faster.Extra cushion makes eye mask and nose touch better, which can be completely shaded. Bluetooth sleep mask is made from Polyester + Cotton, and provide a soft and comfortable feeling. Fabric liner separated from stitching is not defective,it is the place to take out the bluetooth module, so you can full wash the eye mask. Best for frequent flyers to sleep on long flights or sensitive sleepers (insomnia) who dislike glaring lights in any occasions. Perfect for air travel, relaxation, meditation, insomnia.