Bluetooth Beanie Hat, LingsFire Winter Bluetooth Cap with Wireless Headphone Headset Earphone Washable Knit Beanies Hands-free Phone Call for Outdoor Sports Fitness Music Gifts Men Women Boys Girls BLUETOOTH BEANIE 4.0 AND EDR TECHNOLOGY: This wireless musical beanies hat is built-in Version 4.0 Bluetooth Module, you can enjoy hands-free connectivity including decline/accept calls and listen to music wirelessly up to 33 feet (10 meters), will work with Most Bluetooth Enabled Devices. ENJOY STEREO MUSIC: Unisex Bluetooth beanie warm winter knit hat features superior audio quality, enjoy great sound without dangling wires. Sound disks and bluetooth receivers are built right into the beanie for unbelievable clarity. No more ear buds constantly falling out of your ears. EXCELLENT BATTERY PERFORMANCE: Built-in rechargeable Li-Ion battery with long lasting battery life which can support up to 6 hours talking/playing time, 60 hours standby after full charge.(USB charging cable included) BUILTIN MICROPHONE: Available for hands-free and cell phone to transmit to your audio devices directly. Allowing you to talk hands free, find songs, and control volume. It's a perfect solution to keeping your hand free and listening to music while doing your tasks. UNISEX AND FULLY WASHABLE: One size fits most. With built-in removable headphones which can be pulled out from the beanie if you would like to wash your beanie, simple to remove module for easy laundering. We stand behind our products 100% with 30 Days Money Back, One Year Guarantee and Friendly