GoldWorld Bluetooth V4.1 Wireless Musical Beanie Winter Hat Knit Cap Beanies with 2 speakers Unique Christmas Gifts for Kids Men Women Teen Boys Girls Outdoor Sport Running Built-in high performance rechargeable Lithium-poly 45mAh battery, enjoy about 5-6 hours of premium quality talk/play time (full charge in around 2 hours), up to 60 hours standby time. Easy to use control panel: 3 buttons for controlling--Making/Answering Call,Adjust Volume,Pre/Next Song----Works with any Bluetooth enabled device The Bluetooth Beanie is perfect choice 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 songs. Washable: The audio system is fully removable,so you can wash the funk out of your Beanie hat after those long days of wear you are going to have. WARRANTY & SUPPORT - 100% risk-free and hassle-free.1 year manufacture warranty--GoldWorld Customer Support Team promise the effective,responsive,satisfactory Service.