With a high-power centered SMD-LED, two 5mm LEDs, and two more side mounted high-power SMD-LEDs, the Cateye Rapid 5 taillight provides maximum visibility from all directions. Four lighting modes allow you to customize your visibility. The rapid mode is an all-out attention grabber, using all five LEDs in a unique pattern guaranteed to get you noticed. The peloton-friendly pulse mode foregoes the high-power center LED (to save blinding your buddies), while the constant mode or the flashing mode offer conventional visibility for daytime or nighttime safety. Two AAA batteries (included) will run the Rapid 5 for up to 100 hours. Includes the SP-11 FlexTight bracket.