Bluetooth headphones and sleep mask in one: This sleep mask has built-in wireless headphones with high-quality speakers and a microphone. Bluetooth 5.0 guarantees a stable connection to Bluetooth devices even over long distances (up to 20 meters). Block out disturbing impressions with the help of a sleep mask and sleep well with the high-quality sound coming from the speakers!Adjustable size: The sleep mask with headphones is equipped with Velcro, so you can adjust the sleep mask to an individual size. The position of the speakers can also be adjusted so that they sit comfortably on the ears.Rechargeable battery: The sleep headphones have a built-in 150 mAh powerful battery, which takes about 2 hours to charge. With a full charge, you get more than 13 hours of playing time.Soft and washable: The Bluetooth sleep mask has two layers made of 100% polyester and 100% cotton. These layers give a soft and comfortable feeling to the skin while blocking the glare from outside light. The sleep mask is also comfortable to use when traveling.Technical information:Weight: 69.5 gSize: One size fits all46.5 / 8.5 / 1 cmBluetooth version: 5.0Frequency: 2402 Ghz - 2480 GhzBattery: 3.7V / 150mAh rechargeable Li-polymer batteryStandby time: More than 300 hoursOperating time: 13 hoursCharging time: 2 hours Package includes:1 x Sleep mask with wireless Bluetooth 5.0 headphonesNOTE! For hygiene reasons, the product can NOT be returned or exchanged if the packaging/sealing is broken.