Safety light: the flashing lights are relatively bright and easily visible at night or dark. So the driver can maintain a safety distance to ensure your safety when you run. It offers you perfect lighting anytime and anywhere. As parents give us a better feeling when the little ones are running to school in the dark. You can walk your dog in the dark and without any problems. Flashing light safety light: There are 2 modes: always on and flashing. The light is very bright and you can set it between always on and flashing. The entire control of the flash can be done under one button, with just one press of a button, even children can easily master the use. Replaceable batteryPowered by two CR2032 lithium button batteries, the warning light can work for about 70 hours. The battery can be replaced when the current is low. Each LED flash comes with an additional 2 CR2032 lithium button cells. Wide Application:The special design of the soft strap makes it easy to attach to running clothes, strollers, bags, backpacks, clothes, dog collars etc.Ideal for runners, joggers, children, hikers, climbers, cyclists, dogs etc. High quality: the safety light is made of high quality materials and is environmentally friendly and durable. If you have any questions about this flashing light school bag, please do not hesitate to contact customer service, we will solve your problem quickly.