Super-Compact Front & Rear Helmet Light Cateyes brand new Duplex Front & Rear Helmet Light is an incredibly lightweight all-in-one package that can turn through 360 degrees & fits perfectly & simply on your helmet via its long rubber attachment strap. Both lights are able to run for 100 hours at a time with the front light giving an output of 15 Lumens on Constant or 30 Lumens with the Flashing setting, while the rear gives an output of 10 Lumens on the flashing setting. Delivering you with a long term economical light, the Duplex Front & Rear Helmet Light by Cateye is above all convenient for your daily commute when the light draws in. Lightweight Easily Applied & Activated Long Run Time