Bluetooth V5.0 Technology - Bluetooth Beanie Cap with Bluetooth V5.0 technology that delivers high-definition and high-quality music playback sounds, with a wireless range of up to 45 feet for quick and easy pairing with smart-phones, Apple Watches or tablets. | Comfort and warmth - our wireless Bluetooth hats are made of 100% acrylic and are soft and breathable. The exterior is fully stitched and lined with wool to retain heat. Skiing, snowboarding, running and exercising are all great Christmas or birthday gifts for family and friends. | Long-lasting Performance - Built-in rechargeable LiPO battery, charging time is1.5-2 hours, can provide up to17 hours of music or 19 hours of talk time, standby time is 150 hours. | Easy Operation - The leather panel on the ear of the simple-Bluetooth wireless knit beanie cap has 3 reminder buttons and an LED indicator. You can connect to the basic controls of Bluetooth device music playback by booting up, skip songs and control the volume. | Washable & Easy Assemble - unprecedentedly designed to easily remove or reinstall the headphone speaker driver from the cap in seconds for cleaning. Includes a 100% risk-free 1-year manufacturer customer service .