Safety comes first as you enjoy riding that bicycle. Equip yourself with this superb Rechargeable ligt use it on either rear side, or front side to be noticed from a distance. Coming late from work, running late from cycling. Don't worry you'll be noticed from a distance. Can be mounted on seat post, front stering and even at the bicycle shock and frame too.This led light can be used either at night or day time. It has 4 modes. Steady light 4 hours, Running light 6 hours, Strobe light 8 hours and jumping light 12 hours. It's water proof in nature so don't worry about it's safety, instead worry about your safety. It's easily installed and removed in less than 5 seconds. Hurry up before stock lasts.