Easy and fast to pair with smartphones, tablets and other Bluetooth-enabled music devices. Support in seconds to make/answer a phone call Hands-Free. Built-in Li-ion rechargeable battery. Charge via USB cable, with up to 60 hours standby mode. Simple USB recharge and 6 hours of play time up to 10m from your device. (USB charging cable included). Fully Washable: Wash the Bluetooth beanie after removing the Bluetooth headphones from the pouches before putting it underwater. This beanie cap will keep your head warm and allows you to listen to your favorite music without having to wear additional headphones. The Bluetooth stereo headset brings you great sound quality, style, and comfort. Perfect for running!