Unique Gift: Upgraded beanie compatible with Bluetooth features in latest Bluetooth V5.0 technology, simply sync to any bluetooth device in seconds, hands-free connectivity including decline/accept phone calls and listen to music wirelessly up to 33 feet (10 meters) while staying warm in winter. A must have stocking stuffers gag gifts for best friend, birthday gifts for men, boyfriend gifts and gifts for him. Perfect technology for gym, fitness, workout, exercise, relaxation, outdoor sports. Large Battery Capacity: This upgraded beanie hat compatible with Bluetooth with built in 180mAh Rechargeable Li-Ion battery can play music up to 6-8 hours and and 60 hours stand-by time with a quick charge of 1-2 hours(USB cable included). Excellent Sound Quality: Enjoy enhanced music listening experience with advanced digital sound and crystal clear high note while staying warm, delivered by high performance stereo loudspeaker driver offer upto 110DB HD stereo sound. While other brands' upto70DB only and you can hear nothing in crowd. Washable & Unisex design: The headphones are removable easily when the beanie needs to be washed. Unisex, soft and elastic mearial fits most of the head circumference. A must have Christmas gift for men, women, girls, boys. Worry-free After Sales: Our goal is to provide our clients with high quality products, which is why we maintain professional after-sales personnel to ensure the satisfaction of each customer. So if you have any problems after purchasing our winter beanie hat, feel free contact us. We?re always at your service.