[Advanced unisex Bluetooth cap]-This unisex Bluetooth music cap is completely washable, unisex, stretchable, and one size fits all sizes and shapes. A 100% soft knitted beanie with velvety soft fluff inside to keep your head super warm, allowing you to listen to music without wearing additional headphones.[Warm Outdoor Music Peas]-Easily access the control buttons to manage any Bluetooth device in a few seconds, hands-free connection, including rejecting/answering calls and listening to music wirelessly within 33 feet (10 meters), while in winter Keep warm. Very suitable for gym, fitness, exercise, exercise, outdoor sports, such as running, skiing, skating, hiking, camping.[Advanced Technology]-Using V5.0+Edr Bluetooth technology, it can achieve excellent and stable connection with any wireless Bluetooth device. Devices with excellent stereo sound quality output can be quickly and easily paired with smartphones or tablet devices. The true high-definition HIFI sound has excellent sound quality. Let you enjoy music anytime, anywhere.[Long standby]-This Bluetooth hat has a built-in high-density rechargeable 180mA lithium-ion battery. The charging time is about 2-2.5 hours. It can provide up to 60 hours of standby time or 10 hours of talk/music playback time (depending on the volume) And the distance to the source device).