1. Material: ABS 2. Charging voltage: 3.7v 3. Operating voltage: 2.6-4.2v 4. Operating current: 30ma 5. Waterproof grade: IP67 6. Built-in lithium battery capacity: 4 beads 200mAh, 10 beads 350mAh 7. Universal warning safety light can be placed on helmets, motorbikes, electric bicycles, bicycles, backpacks, etc. 8. 3 lighting modes, switch between left/right/flash modes by pressing the button switch once 9. Provides 8 hours of light after 2 hours of charging via USB 10. Easy to install with hook-and-loop patch 11. Attach one side to the helmet with adhesive (included) and then attach the tail light to it, which can be removed and reinstalled at any time 12. Size: 8.7x3.5x1.5 cm 13. Weight: 43g
