Features13 lighting modes, reminding passengers and drivers to keep a safe distance. 2Aluminum alloy construction, solid, strong, corrosion-resistant and weather-proof. 3Great waterproof performance, safe to use in rain and winter weather. 4Rubber base, durable, non-slip and little hurt to your helmet or handlebar. 5Mini size for convenient carrying. 6Tool-free installation, simple and quick operation. 7Can be mounted on handlebar, seat tube, seat stay, front fork and so on. 8Nice for Cycle, camping, hiking, walking or other night work in daily life.SpecificationSuper bright without dangerous dazzling. Absolutely a wonderful bike accessories for Cycle enthusiasts. Features:3 lighting modes, reminding passengers and drivers to keep a safe distance. Aluminum alloy construction, solid, strong, corrosion-resistant and weather-proof. Great waterproof performance, safe to use in rain and winter weather. Rubber base, , non-slip and little hurt to your helmet or handlebar. Mini size for convenient carrying. Tool-free installation, simple and quick operation. Can be mounted on handlebar, seat tube, seat stay, front fork and so on. Nice for Cycle, camping, hiking, walking or other night work in daily life. Specifications:Material: Aluminium alloy + ABS Color: White / Red / White & red ( optional ) Light Mode: Long bright, Flash, Slow flash Lumen:200 lumen Endurance: 8 - 15h Unit Size: 27.5 * 26 mm / 1.1 * 1.0 in Unit Weight: 20 g / 0.7 oz Package Size: 7 * 4.5 cm / 2.8 * 1.8 in Package List:2 * LightsPackage List2 * Lights