This Bluetooth sleep mask blocks out light to help you fall asleep faster and sleep more soundly, while letting you enjoy your favorite music without earbuds. It is suitable for home, office, air travel, and those dealing with insomnia. Fully adjustable and easy to wear Hookandloop closure provides quick and easy wearing. Fully adjustable strap ensures a snug, secure fit for most head sizes. Washable and easy to care for. Breathable and comfortable Made from soft and breathable fabric for longlasting comfort. 3D ergonomic design fits the contours of the nose and provides 99% light blocking while leaving ample space to avoid pressure on the eyes. Bluetooth V5.0 with hands calls Advanced Bluetooth V5.0 delivers fast pairing, stable transmission, and low power consumption. Wireless listening for music without wires and a builtin microphone for hands calls. Use scenarios Traveling: use on planes, trains, or in hotels to block cabin or ambient light while enjoying music or making hands calls. Home or office napping: take a quick nap or relax with audio without disturbing others, thanks to cordless listening. Insomnia management: combine light blocking with soothing audio to help you fall asleep more easily.