Features1Two light modes, click the silicone button, constantly bright blinking, night cycling safer. 2Bike with lights in the rear view mirror, with lights, night cycling can maintain visibility, increase cycling safety. 3Mini handlebar rear view mirror adopts aluminum alloy main body, high strength and oxidation resistance, durable, frosted texture feel good. 4Convex mirror with a wider field of view, stainless steel mirror, clear imaging, sturdy and durable, will not be broken due to impact lens, so that riding safer. 5Adjustable angle upgrade twoway adjustment, vertical 180 Degree, horizontal 360 Degree, allround rotation, can be adjusted at will according to your use, refuse blind areas, safe travel.SpecificationItem Type: Cycling Handlebar Rear View MirrorMaterial: Aluminum AlloyWeight: Approx.77g/2.7ozSize: Mirror Diameter: Approx. 51.7mm/2.0inBattery: 2 X 40mAh CR1130 Button Battery (with Battery)Light: Two Light Modes, Click the Silicone Button, Always On-FlashingApplicable Handlebar for Installation: Diameter: Approx. 18-23mm/0.71-0.91inPackage List1 x Bicycle Rear View Mirror with Light1 x Hex Wrench