[Soft, comfortable, washable] The stretchable knitted material provides maximum comfort and warmth for winter beanies and hats. It is the perfect gift and accessory for men's fashion in cold weather. Can be washed by hand, please take off the earphones before washing. Put on a bluetooth beanie and earphones and enjoy great music without worrying about the cold weather again. It will become your best companion, warm all winter.[Upgraded Bluetooth Doudou] The maximum transmission distance of Bluetooth Doudou can reach 10 meters, which combines fashion and technology. Not only can you keep warm in winter, it can also bring you hands-free Bluetooth music enjoyment and phone calls. This is a unique technology gift for men, women and teenagers.[Excellent battery performance] Worried about short battery life? We understand the needs of our customers and have improved the rechargeable lithium battery of Bluetooth Doudou. The charging time is 2 hours, it can work continuously for about 7-10 hours, and the standby time is up to 72 hours. Let go of your hands and enjoy the entertainment time[USB Charging] Its easy to charge the hat because it comes with a micro USB cable, which is connected to the bottom of the control unit for charging. You can take it off and charge it with a laptop, mobile power, socket, car charger, etc.[Christmas gift ideas]: In the cold and cold morning, buy yourself a Bluetooth music hat to walk the dog, without earplugs or headphones, free your hands and enjoy music. Suitable for most multi-functional lifestyle sports outdoor skiing, hiking, camping, running, exercise and daily use. Unisex Christmas gifts for boys and girls, moms, dads, wives and husbands.