About this item 4 in 1, Free Your HandsSleep headphones & sleep headband & Bluetooth sleep masks & Bluetooth sports headwear 4-in-1. It makes your exercise more relaxed and comfortable. The Bluetooth sleep headband has a built-in microphone that can be used to answer and make calls. It is suitable for use in sports activities as well as for side sleepers. Small size, multi-purposeThe sleep headphones have a compact design, making them easy to carry around. They can also be used as a hair band, headband, or wrist guard in your sports and leisure activities, always providing fashion and convenience. Made from skin-friendly and comfortable fabric, this headband is washable, ensuring a comfortable wearing experience. HIFI Binaural Stereo Sound EffectThese sleep headphones utilize the latest Bluetooth technology for a more stable connection with mobile devices, tablets, laptops, or PCs. The ultra-thin speakers deliver high-fidelity stereo sound quality, creating a soft and pleasant music en