Front and Rear Double Lights. 3 Modes Warning Lights There is a lighting lamp with 3 brightness modes in the front of the hat. and a red warning lamp in the back with a flashing mode and 2 brightness Level. Meet your needs at various times and scenarios. such as when riding or running in winter. you can turn on the front and rear lights at the same time. Quality Warm Comfortable LED Knit Cap The winter hat is made of very highquality materials. no peculiar smell. very soft. exquisite workmanship. doublelayer design. more warm. but not very heavy. the appearance is very classic and beautiful. and it is very suitable for both men and women. LED Hat with USB Rechargeable Our hat with alarm light uses usb to charge. it can be charged using sockets. computers. power banks. etc..The usage time of the front illuminator and the rear warning lamp when fully charged: the brightest mode is used for about 2 hours. the middle mode is used for about 4 hours. and the third mode is used for about 68 hours. Removable and Easy to Clean The lamp on the beanie can be removed. When you need to clean it. first remove the lamp and then clean it. Machine wash is possible. It will not deform after washing and has good elasticity. One Size Fits All Elastic beanie and scarf for women and men. with stretchable high quality knitted material. breathable and comfortable. keep warm in winter. free your hands Very suitable for outdoor sports. repair work. night running. fishing and dog walking at night etc.