Features:nStay safe while cycling with this brake sensing taillight. Its high efficiency LED design ensures powerful illumination, increasing visibility for safe riding.nThis taillight features a brake sensing function that automatically increases brightness when you brake, alerting vehicles behind you of your presence.nDesigned for all cycling enthusiasts, whether for daily commutes or long bike rides, this taillight offers reliable illumination and warning capabilities.nWith its waterproof design, it performs perfectly in almost all weather conditions, providing reliable performances. It is a must-have accessory for night riders.nPerfect for road cycling, this light provides high efficiency illumination, ensuring your safety during rides. Its easy installation allows you to mount it on the back of the bike.nnSpecifications:nMaterial: ABS+PCnColor: As The Picture ShowsnPackage Weight: approx.50gnSize: approx.30x33mm/1.18x1.29inn(More Size Detail, Please See Photo.)nnNote:nPlease allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid.nDueto the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!nnPackage Includes:n1Pc Bicycle Taillight