[COMFORTABLE & ERGONOMIC DESIGN - The MUSICOZY Bluetooth sleep mask made from premium cotton is ultra-soft skin-friendly and breathable. The ergonomic design ensures complete darkness making it ideal for relaxation naps meditation and sleep. Perfect for side sleepers travel home and office use. LONG BATTERY LIFE - Equipped with a 240mAh high-performance battery and a Type-C charging port this Bluetooth eye mask offers over 15 hours of playtime on a single charge. No more mid-night wake-ups due to battery alerts thanks to its upgraded battery chip. PERFECT LIGHT BLOCKOUT - The innovative design with adjustable bending cartilage ensures a perfect fit effectively blocking out all light from the nose area. Ideal for frequent travelers insomniacs and anyone sensitive to light. WASHABLE & ADJUSTABLE - The speakers and Bluetooth module are removable allowing you to wash the mask. The adjustable Velcro strap ensures a snug fit for all head sizes and shapes enhancing comfort during use. "EXCELLENT STEREO SOUND QUALITY - Featuring true HD high-fidelity sound the MUSICOZY sleep headphones use the latest Bluetooth 5.2 technology for superior sound quality. Easily pair with smartphones computers and other Bluetooth-compatible devices. Adjust the speakers position for optimal sound."]