Rechargeable hat provide a standard USB port for battery charging,you can charge it in car charger,computer or portable power bank,It takes about 1-2 hours to fully charge. Led hat beanie With 3 brightness settings,the high setting lasts about 2 hours, medium about 4 hours,and low up to 8 hours,you can adjust the brightness of the hat according to your own needs. This hat is made of soft and elastic acrylic material,so one size fits all men,women and children,the simple and stylish design allows everyone to easily match different clothes in the cold winter. The black beanie built in 4 LED lights and light up to 30 feet away,It’s an ideal for walking at night,bicycler,camping,auto repair,fishing or other outdoor activities. This hands-free flashlight can be used as a winter gift,and on Halloween,Christmas,or New Year’s Day,it may be your best choice to give this lamp hat as a gift to your family and friends.