Bluetooth Beanie Knitted Hat with Built in Wireless Headset, Earphone and Mic, Stereo Speaker for Music and Mobile Smart Phones, in Black HANDS-FREE MUSIC AND CALLS  Compatible and syncs wirelessly with all Bluetooth devices to give you a dynamic music experience, allowing you to listen with easy-to-use control buttons. Built-in microphone to deliver calls with clarity. WARM, SOFT, AND STYLISH  Featuring high quality one-size-fits-all knitted styles that provide your head with comfort and maximize warmth as you enjoy everyday outdoor sports activities. Also comes in grey, blue, red, pink, and white. BATTERY LIFE Enjoy up to 7 hours hands-free calling and undisturbed music time. Easily recharge with included USB charging cable. Wireless range up to 33 feet. WASHABLE  Easily remove internal earpiece, speaker, and battery components and re-install after washing. GIVING BACK  We donate a portion of the proceeds to charity saving the ocean and sea turtles