Amazing Bike Wheel Lights, Waterproof 3 Light Mode Bicycle Spoke Lights, Used for Safety LED Wheel Reflectors  (White)

Pack of 2 units Easy to install. Press it onto spokes of your wheel and slide toward rim until fit is tight, and it then remains securely in place. No tools required. Safety guaranteed. The rgb light can be used for safety and warning Three light modes. Fast flashing, slow flashing and 7 colors strobe. Highlight the personality. For vocational rider or casual cyclist, show your cool personalities. Battery - lithium battery. Battery number - CR2031 (Battery included)