Provides hands-free light for tradesmen (eletricians, plumbers, painters, builders), security, farmers, and outdoor activities (fishing, camping, walking, running) Knitted 65gsm 35% acrylic/65% polyester Roll up cuff Instruction sheet included 4 SMD LED lights - 150 lumen 3 brightness steps USB recharchable power Removable light unit for charging and cleaning beanie Battery 250mAh, input: 5VDC/Output: 150lm Legend Life Headlight Beanie