MUSICOZY 3D Bluetooth Sleep Mask Headphones, Sleeping Earbuds, Blackout | Breathable Cotton Blend, Soft Cotton Comfort for Side Sleeper, Detachable & Washable Design, Hi-Res Audio, 15-Hour Playtime

3D BLACKOUT DESIGN, MADE FOR SIDE SLEEPERS: The 3D contoured sleep mask creates generous eye space for natural blinking while following the contours of your face. The blackout design helps block unwanted light, while the full-wrap structure and side-sleeper-friendly fit help reduce pressure around the eyes and ears for a more comfortable resting experience. PREMIUM COTTON COMFORT FOR ALL-NIGHT WEAR: Crafted from a premium blend of 85% cotton, 10% polyester, and 5% spandex, this soft and breathable sleep mask feels gentle against the skin and stays comfortable for extended wear. The smooth fabric and flexible fit create a cozy experience for nighttime sleep, travel, naps, meditation, or relaxing at home. IMMERSIVE HI-RES AUDIO WITH LDAC: Experience rich, detailed sound with Hi-Res Audio and LDAC technology. Built-in headphones deliver immersive wireless audio for music, white noise, meditation, podcasts, and relaxing sounds, helping you create a more peaceful personal space without wearing separate earbuds or headphones. BLUETOOTH 5.4 FOR STABLE WIRELESS LISTENING: Enjoy a fast and reliable wireless connection with Bluetooth 5.4. Designed for smooth, low-latency listening, this Bluetooth sleep mask keeps your audio connected while you rest, relax, or travel. Pair it with your smartphone or compatible device and enjoy cable-free convenience. 15+ HOUR PLAYTIME & EASY BUTTON CONTROLS: A built-in 200mAh E5 cobalt battery provides up to 15+ hours of playtime after approximately a 2-hour charge, giving you dependable audio for overnight rest, travel, and daily relaxation. Convenient buttons let you power on or off, adjust volume, switch tracks, and play or pause audio without reaching for your phone.