【Stereo Sound with Thin Speakers】Thickness is only one-third of the average speaker, which is very comfortable for sleepers. True HD HIFI sound featuring latest Bluetooth V-5.0 technology that produce great sound quality, bluetooth can pair your iPhone XS Max/ iPhone XS/ iPhone XR/ iPhone X/ iPhone 7/ iPhone 8/ iPhone 6 or any other Smartphones iPad Tablets easily.Compatible with Android and Ios.It is the best gift for family or friends on travel and airplane in Festivals. 【Play Time More Than 9 Hour】Upgrade usb chargeable battery, Built-in 240mAh high-performance battery, Charge about 2-2.5 hours provide more than 9 hours playing time, won’t be waked up at night,enough to support the whole night.If you fall asleep with it on and the battery runs down , this bluetooth eyemask won’t beeps to wakes you up. you will have a very good sleeping. 【Good Companion For Sleep And Travel】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. Best for frequent flyers to sleep on long flights or sensitive sleepers (insomnia) who dislike glaring lights in any occasions.Sleep in a light blocked world whenever and wherever.Perfect for air travel, relaxation, meditation, insomnia.