BLUETOOTH HEADPHONES AND SLEEP MASK IN ONE: These sleep headphones are an eye mask with built-in wireless earphones with high-quality speakers and microphone. Bluetooth 5.0 ensures a stable connection to your Bluetooth devices even over long distances (up to 20 meters). Use a sleep mask to shut off disturbing impressions and get a good night's sleep with high-quality sound from your speakers! ADJUSTABLE SIZE: The sleep earphones come with Velcro, so you can adjust the sleep mask to your personal size. The position of the speakers can also be adjusted so that they sit comfortably on the ears. RECHARGEABLE BATTERY: The sleep earphones built-in 150mAh high-performance battery, you can charge it for about 2 hours, then provide more than 13 hours of playback time. SOFT AND WASHABLE: The Bluetooth Sleeping Mask has two layers, made of 100% polyester and 100% cotton respectively, it provides a soft and comfortable feeling to the skin while blocking light and light from the outside. Also great on the go. Specifications: Color: Black Weight: 69.5g SIZE: ONE SIZE - FITS ALL 46.5/8.5/1 cm Bluetooth version: 5.0 Frequency: 2.402Ghz - 2.480Ghz Gearbox: 20 m Battery: 3.7V / 150 mAh Rechargeable lithium polymer battery Standby time: over 300 hours Playing time: 13 hours Charging time: 2 hours Package Included: 1 x Sleep Mask with Wireless Headphones Bluetooth 5.0 Notice! For hygienic reasons, it is not possible to return or exchange the product if the packaging/seal is broken.