Latest Bluetooth 5.2 & Long Battery LifeOur bluetooth sleep mask comes with the latest wireless Bluetooth 5.2 Technology that allows you to easily pair it with your smartphones, iPads, tablets, laptops. It comes with an upgraded battery which can fully charge in just 2 hours and can be used for up to 10 hours, and you can enjoy music all night while you sleep. This is the solution for a better sleeping. Premium 3D Design & BlackoutWhat makes our bluetooth eye mask stand out is the upgraded 3D Design along with its premium soft materials. It is made of feather-soft material with 3D contours which makes it very comfortable for your eyes. This way you get up in the morning without lines or wrinkles and the eye mask doesn't rub over your eyelashes. Crystal HD Sound QualityThis eye mask with bluetooth headphones has 2 ultra thin built-in Hi-Fi speakers that provide a great audio experience. for listening to your music, podcast, ambient sound, audiobook. The speakers are so thin you won't notice them and stay in place while you sleep so they are the sleep earphones for side sleeping. Adjustable & WashableThe speakers of the sleep mask headphones are adjustable and you can move them in the best position until they allign with your ears. You can also adjust the velcro strip to tighten the mask on your head. Our sleeping mask with headphones is washable. Both the speakers and the bluetooth central module can be removed anytime and then you can wash the mask. Built-In Control ButtonsYou can control the music via your phone or via the buttons of the bluetooth eye mask sleep headphones. This allows you to adjust the volume, select the previous/next track, pause and restart the music and possibly answer or hang up phone calls. You can also answer your calls with the built-in buttons of the sleep mask bluetooth while you are away from your mobile phone.