The Cat Eye Rapid 1 head & tail-lights are USB (Universal Serial Bus) rechargeable safety lights that feature a high-power SMD-LED with Opti Cube technology & a unique rapid flashing pattern that quickly grabs motorists’ attention. The included USB (Universal Serial Bus) charger rapidly rejuvenates the built in Li-Ion battery & a low-battery indicator reminds you when the charge is getting low. 4 modes give you a choice of visibility options for both nighttime & daytime safety. Both the white Front Rapid 1 & the red Rear Rapid 1 comes with the newly designed low-profile SP-12 Flex Tight™ bracket. Compatible with the all-new RM-1 Saddle Rail bracket, the rear rack bracket & the clothing clip, available separately.