DOLIROX Wireless Bluetooth Knit Hat Music Cap Hands-free Phone Call Answer Ears-free Beanie Hat (Black) Handsfree speaker that protects the head from the cold winter and will also allow you to listen to music and talk while doing variety of other activities Perfect for traveling, waiting for the bus, jogs in the cold or just rocking out in your bedroom! You will look great and keep warm while listening to your favorite music. Keep the sound track to your life playing all the time! Superior sound quality; Simply sync to any Bluetooth device and in seconds the wearer can enjoy hands-free connectivity, enabling them to make/receive calls and listen to music, wirelessly Set-in MIC, available for cell phone to transmit the speaking phone to your audio devices diretly so that the user can hand free answering phone up via the device. Set-in Li-ion chargeable battery, charge via USB Cable; With Built-in Removable headphones which can be pulled out from the hat if you would like to wash the hat!