Just slide the switch to the on position and the hat white up the night, it aft for the disconnected position. This is the harmless flashlight when you running or cycling at night Multi-functional, it is a harmless for running, cycling, walking, fishing or hunting at night, it is also good for kids, so you can find your kids easily at night. for concert, party, club or performance It points directional white toward what your eyes are looking at. Ideal for joggers, bikers, ... Washing Instruction 1. out one added of the led white. . . Then into the hole Vertically. . . the air-filled Circuit out Size : one size fits most people If you have any questions, please feel autonomous to contact us. We will you with a adequate solution, we will reply you within 24 hours. yourself a chance to try our `` Recommended '' product and customer service.