【Upgraded LED Headlamp】This cordless hat features 5 rechargeable high-power LED lights with 3 updated setting modes: 50% brightness, 100% brightness, red and blue emergency lights. You can choose different brightness levels depending on the environment or use the red and blue emergency lights in an emergency. Perfect for anyone who likes to be outdoors. 【Wireless 5.0 Bluetooth Hat】Bluetooth 5.0 wireless technology provides the most stable and powerful connection, supports long-distance transmission of 49.2 feet/15 m, easy and quick to pair with most Bluetooth-enabled smartphones, tablets and other music devices in seconds. Built-in wireless stereo speaker and microphone for hands-free calling and music listening, enhance your music experience. 【2 Built-in Rechargeable Batteries】With 2 built-in rechargeable batteries, one for headphones and one for LED light, you can take it out to charge with laptop, power bank, outlet, car charger, etc. 2 hours LED charging time provides 4 hours of normal lighting or 3 hours of emergency lighting. 1 hour bluetoth charging time for 10 hours of music playback or 8-10 hours of talk time. 【Stylish Winter Hat】This winter sports hat is made of acrylic stretch material that is ultra-soft and insulating, which has great elasticity and provides maximum comfort, adapts to the most versatile lifestyle indoor, sporty outdoor or everyday. Removable and washable. Let you enjoy music while keeping your head warm in cold weather. 【Perfect Gift】Designed with a diameter of 17cm/6.7inch and a height of 22cm/8.7inch, this sports hat fits most heads, perfect for both men and women. Suitable for those who often participate in outdoor activities, such as running, fishing, skiing, farming, hiking, hunting, dog walking, holiday travel, etc. A great Christmas or birthday gift for family and friends.