Satisfaction Guaranteed - We take pride in ensuring that our customers are fully satisfied with our product. If you encounter any issues while using our Bluetooth headband, please do not hesitate to contact our after-sales team via email. We will make every effort to provide a satisfactory solution within 6 hours. Luxurious Comfort & Durability - Musicozy wireless headband headphones made with soft spandex-nylon blend fabric and mesh design for maximum comfort, elasticity, and universally fits most head sizes. Plus, it's incredibly soft and hypoallergenic!. Extended Playtime Wireless Headband - MUSICOZY Sleep Headphones boast a powerful rechargeable lithium battery, offering up to 10 hours of continuous playtime on a single 1-2 hour charge. Enjoy uninterrupted listening pleasure throughout your day, without missing a beat. Next-Level Audio Experience - Experience the power of advanced 5.2 version headphones. MUSICOZY bluetooth headphones with 40mm composite drivers! The highly elastic silicone outer ring produces deep bass, while the lightweight and flexible biocellulose dome delivers mid and high range, and enhances clarity. Upgrade your listening game today!. 2 in 1 Sleep & Sports Headband - The Bluetooth Headband enables you to enjoy music without wearing extra headphones, while keeping your hair and sweat from tidy. It further features a built-in microphone to prevent missed calls. The headband is suitable for outdoor activities such as gym workouts, jogging, yoga, and other outdoor activities. Additionally, it can assist with relaxation, meditation, travel, insomnia, and more.