Super Bright:These safety bike rear lights with LED lamp beads for night riding will keep you safe and secure.Good for runners,walkers, strollers,kids,women,dogs and bicycle rear lights. 3 Lighting Modes: Easy press to switch the Fast Flash, Breathing Flashing and Steady mode. LED bike light is of high highlight warning function, make you more safe while riding at night Weather Protect: Impervious to water and dust design make the bike tail light to keep you visible and safe during any outdoor activity in any weather. Battery Replacement: This red bike light is battery-powered (not rechargeable) to prevent misunderstanding. It runs on a CR2032 button battery and comes with a dedicated mini screwdriver for easy battery replacement, just unscrew the 4 back-cover screws, swap the battery, and retighten the screws. It delivers 6-7 hours of runtime in Steady mode. Easy to install: The magic strap can be easily loosen and fasten, and no tools are needed. This bicycle tail light is fit for all type of bikes like road bike, mountain bike MTB and also can be used as the helmet light, backpack light, wheelchair light, scooter light and caution light. Enhance your visibility during nighttime activities with the ROCKBROS LED Safety Light, a 2-pack rear tail light designed for bicycles. These lights, built with high-quality LED lamp beads, offer three lighting modes including fast flash, breathing flashing, and steady mode, ensuring you can adjust the brightness based on your needs. The IP65 waterproof and dust-proof design makes this product suitable for various weather conditions, perfect for runners, walkers, strollers, kids, women, dogs, and bicycles. Easy to install, the magic strap can be fastened without tools, fitting all types of bikes, helmets, backpacks, wheelchairs, scooters, and serving as a caution light. The product comes with a mini screwdriver for battery replacement, ensuring longevity and ease of use.