Perfect Gift Option: Make it a thoughtful and functional present for your dad, husband, or loved one on special occasions like Thanksgiving, Christmas, birthdays, and Father's Day. The classic knit pattern not only keeps you warm but also lights your way at night while adding a fashionable touch. High-Capacity Battery & Easy USB Charging: Equipped with an energy-saving USB rechargeable LED light. The 250 mAh battery takes only about 1-2 hours to fully charge and lasts for 5-12 hours of continuous use, depending on brightness. Conveniently charge via any USB outlet, laptop, car charger, power bank, etc. 3 Adjustable Brightness Levels: Features 3 brightness levels, adjustable with a simple button press. With a larger battery capacity, the light lasts up to 5-6 hours on HIGH, 8-9 hours on MEDIUM, and 11-12 hours on LOW. A perfect Christmas gift for men, always illuminating your path when needed. High-Quality & Warm: Made from premium acrylic material that's soft and highly elastic. The thick thermal fleece lining is skin-friendly and non-itchy, providing extra warmth and protection on the coldest winter nights. Remove the LED light before washing. Note: Slight variations in texture and color may occur; please understand. Color: Black + Dark Gray Material: Acrylic Fibers Package Contents: 2 x Bluetooth Light-Up Hats Note: Light reflection and different displays may cause the color of the item in the picture to differ slightly from the real thing. The allowable measurement error is +/- 1-3 cm.