Bluetooth 5.4 with HD Sound & Call: This bluetooth sleep headphones experience high-fidelity audio (96kHz) and ultra-stable transmission (900Kbps) with the latest Bluetooth 5.4 chip. Answer calls or stream music with clarity, whether you're meditating or drifting off. Total Darkness, Zero Pressure Fit: This bluetooth mask with bamboo fiber wicks sweat 3x faster than cotton – stay dry all night. Zero pressure on eyes, 100% blackout for deeper sleep. No slipping, no squeezing—just a weightless, full-coverage fit that feels like a gentle hug for your head. Sustainable & Planet-Friendly Choice: Made from renewable bamboo, our sleep mask supports eco-conscious living. Every purchase helps reduce plastic waste and protect the Earth. 15 Hours of Wireless Serenity powered by our new E5 energy-safe battery—bigger, cleaner, and longer-lasting. Adjustable & Multi-Use Design: Sleep Mask with Bluetooth Headphones perfect for travel, yoga, office naps, meditation or bedtime. The adjustable strap fits all head sizes, and its durable, machine-washable fabric stays fresh wash after wash. Excellent Gift-Giving Choice: Want to convey your thoughts, but don’t know how to choose a gift? Our sleep mask with headphones is an excellent choice for gifts in all scenes! Whether it is a warm Mother's Day, a special birthday, or a ritual-filled Thanksgiving or Christmas, Valentine's Day,sleep mask with built-in headphones can carry your love.