Back light contains 5 bright LED lights and has 7 different modes of operation
Suitable for installation in the seat tube diameter of around 3.5 cm
Powered by 4 X AAA Batteries (batteries not included)
⚠ WARNING: This product can expose you to chemicals including DEHP, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.