Heartte&reg; Wireless Bluetooth Headphone Music Audio Hat Cap with Speaker & Mic Hands Free for Outdoor Sport, Compatible with iPhone 6s/6,Plus,Samsung and Other Smart Phones (Grey YS-BTMH-H02) Style and Technology Combined: Stay warm and enjoy hands-free music and calls. Perfect for outdoor sports, running, skiing, skating, hiking, working out, dog walking, holiday travelling, and so on. You will look great and keep warm while listening to your favorite music. Keep the sound track to your life playing all the time. The Latest Blutooth V3.0 Technology: Easy and fast syncs to any Bluetooth device in seconds such as iPhone, Samsung, HTC, Nexus tablets, iPads, and all other bluetooth compatible devices High quality built-in stereo speakers produce excellent sound quality to make any activity fun Built in rechargeable Li-Ion battery, about 5 hours talking/playing time, 2 hours charging time, 60 hours standby, so you have less time charging and more time enjoying. (USB charging cable included) Fully Washable & One Size Fits Most (Just remove the internal speakers from their pouches before washing). Premimum soft warm beanie hat is perfect for spring, fall, and winter.