• [Front and rear bicycle light] Compact and powerful front and rear bike lights can ensure the safety of people and others, and ensure that other road users can see you and your bicycle.
• [3 lighting mode options] 3 lighting modes can meet the best visibility in day and night.
• [Button Battery] Replaceable Two CR2023 button batteries, included in the package.
• [Easy to install] It can be easily loosened and fixed without any tools. It can also fit various sizes of seatposts, handlebars, seat risers, backpacks, helmets and telescopic chairs according to your preferences.
• [Waterproof] waterproof, even in snow and rain can prevent water splashing from any angle.

As You Choose:1 Piece Red Bike Warning Light1 Piece White Bike Warning Light1 Set Bike Warning Lights(Red, White)