ON THE WAY&reg;Waterproof 7 Modes 5 LED 260 Degree Wider Visibility Bicycle Bike Cycling Ultra-Bright Rear Tail Light Lamp Warning Light-Blue Color Brand new and high quality. Water Resistant. Easy to install in bicycle frame without tools 5 high bright Led light, constant laser light for safety 7 Kinds of switch: A:9 LED Steady light ,B:9 lights all bright fast flash C:9 lights all bright flash slowly,D:9 lights flash Slowly from left to right (1-2-3-4-5-6-7-8-9),E:9 lights flash Slowly from right to left (9-8-7-6-5-4-3-2-1),F:9 lights Flash fast from left to right(1-2-3-4-5-6-7-8-9),G:Slow flash cycle(19-28-3-47-56)