Universal Silicone Strap: Improved elastic silicone strap allows the flashing light to be attached to anything, such as school backpack, helmet, dog collar, scooter, stroller, front or rear bicycle light, etc. Durable and recyclable: Hanging reflector, the safety light is powered by two button cell batteries, which provide strong brightness for up to 100 hours. You can reuse the safety lights by replacing the battery inside (CR2032). Get it now! High visibility: luminous hanging school backpack, the flashing light has higher visibility and works especially well at night, giving you and your child a higher level of safety and preventing careless and distracted driving. Wide range of applications: flashing light school backpack, the safety light is very suitable for outdoor activities in the dark, such as walking, jogging, cycling, hiking, dog walking, etc. Especially suitable for children's school backpacks on the way to school. 3 Light Modes: School Backpack Light Pendant, the flashing light has three light modes: always bright, fast flashing and slow flashing. It can be switched with the touch of a button, making it easier to use and making it easier to use in different scenarios.