1 Voice The Original Bluetooth Beanie In Black By (Extended Battery That Lasts 10-12 Hours) 1 Voice is the creator of the Bluetooth Beanie ****Featured on the Today Show, Live With Kelly & Michal, CNN, NY Times, Teen Vogue, Life & Style Magazine, People Magazine**** Extended battery offers 10-12 hours of continuous playback Built-In Bluetooth Headphones: CSR 8645 V4.1 chip including state of the art signal stabilization that prevents audio from skipping with you are running or working out outdoors. One Size Fits All; Machine Washable