HIGHSIDER PROTON THREE rear light in black metal with double-sided adhesive tape. The small dimensions make this headlight practically invisible on the bike. The trend towards ever smaller lighting elements gives the bike a fresh and clean look. No more oversized lighting systems! The right size for discreet but functional lighting... In particular, the PROTON THREE model is equipped with a high-strength double-sided adhesive tape that allows it to be mounted on almost all parts of the bike. Dimensions: Diameter: 11 mm Width: 12 mm. Height: 12 mm Depth: 22 mm Weight: 20g Connections: Yellow = Rear position light (+) Red Brain light (+) Black = Ground (-)