Longer Battery Life: 4 Built-In Led Caps With 3 Brightness Settings, Upgrade Of 300 Ma Battery Capacity, Full Brightness (110 Lumens). Running Time Of Up To 10 Hours For Low, 3 Hours For Medium And 2 Hours For High Duration For Continuous Use (Much Longer Running Time Than Other Lights On The Market).Polyacrylic.Beanie.Usb Rechargeabl & Easy-To-Use: Offer A Standard Usb That Can Be Charged Via Any Standard Usb Port. You Can Charge It In A Car Charger, Computer, Wall Outlet And Portable Power Bank, Etc. The Indicator Lights Up Red When Charging And Green After About 2 Hours.Convenient Loading And Washing: All You Have To Do Is Open The Edge Of The Stocking Cap And Push The Light Inward To Separate It And Wash The Cap Or Charge The Light. 4 Led Lights Have A High Quality Waterproof Protection Class Ip44. With Three (3) Adjustable Brightness Settings, You Can Have The Perfect Amount Of Light For Every Task.Use Anywhere: It Is The Ideal Headlight Hat For Runners And Outdoor Adventurers In Winter. Wear It When Running, Camping, Hiking, Hunting, Jogging, Shoveling Snow Or At Parties, Etc. Light Up Your Way In The Dark Night And Enrich Your Quality Of Life.