Product Details Color: Red Brand: Smart Material: Resin Power Source: Battery-powered Water Resistance Level: Waterproof Item Weight: 0.22 pounds Batteries Required: 2 x AAA alkaline batteries (mini-monitor batteries included) Continuous Usage Time: 50 hours Daily Waterproofing Lighting Patterns: Switch ON → Super Flash → 1 light (0.5W) on → 2 lights (0.5W + 0.5W) on → OFF LED Color: High-brightness red LED 0.5W x 2 Accessories: 1 seat post mounting bracket ((diameter) 25.4mm - (diameter) 31.6mm), 1 seat stay mounting bracket ((diameter) 12mm - (diameter) 18mm) Although this is a new, unused item, there may be some damage due to warehouse storage. Please purchase only if you understand this. New, unused item, but the packaging may be damaged due to warehouse storage. Please purchase only if you understand this. Will be shipped in simple packaging. #Crossbike #Roadbike #Mountainbike #Pistbike #Electricbicycle #Bicycle #Bicycleparts #Shimano #SHIMANO #Cyclecomputer