Materials: LED beads, ABS engineering plastics, components, etc. Battery: 1 button battery line: switch design mode: flashing application: 2mm circular spoke bicycle
*No need to change the route, just drive according to the route on the wheels* One wheel can produce an extra card, and the combination of blue and red is even cooler* The switch design, from bright to bright * on both sides, greatly improves driving safety* Good waterproof performance