1. Waterproof design, can also be used in the rain, not easy to break 2. With night light function, you can clearly see the time at night 3. With silicone pad to prevent wear and tear of the handlebar 4. Power supply: button battery included 5. Material: PE 6. Packaging: OPP bag packaging 7. Weight: about 100g 8. Size: about 4.2 x 2.5cm
