BLACK DECK Winter Unisex Beanies with Bluetooth and LED Headlight are One-Size-Fits-All. It is made of a skin-friendly acrylic fabric which keeps your head warm and the inner soft fleece lining ensures your hair stays damage-free. The 3-in-1 stylish beanie features a headlight, Bluetooth, and a warm beanie to save you from the hustle of managing additional headphones, headlight, and headwear while doing various indoor/outdoor activities during winter. Bluetooth 5.0 Technology requires low operating power, enables fast connection, has stable signal transmission capability, and syncs to connect transmission distances up to 10m/33 feet. It is supported in all Bluetooth-enabled devices like Android, iOS, Windows smartphones, tablets, PCs, and laptops. Built-in-high-capacity polymer lithium battery gives Bluetooth 12 hours of playback and 60 hours of standby on charging for about 2.5 hours. A charging cable is provided to charge the Bluetooth. The LED headlight is a USB device that can be directly plugged USB port (laptop, power bank), so no cables are needed. Bluetooth module and LED headlight can be removed to wash the Beanies. It is recommended to hand wash it using mild detergent or you can also wash these in a machine on a gentle cycle to avoid pilling. Our Unisex Beanies come in pleasant colors and will serve as an amazing choice of gift for various occasions like Valentine’s Day, Thanksgiving, Christmas, New Year, Anniversary, and Birthday. BLACK DECK never compromises on quality as we value utmost customer satisfaction, so you can trust us with the quality of our products. Hope you enjoy using our latest collections of beanies.