Super Bright and Power SavingLED lights have 5 high-brightness environmental protection energy-saving lamp beads, and reduce battery consumption. which can effectively improve the brightness of the lampAnd Can be easily seen from hundreds of feet away. Ideal for use as navigational, signal, or safety lights.Very Easy to Use With one simple push of a button, you have instant illumination with 3 setting modes [steady/fast strobe/slow flash].Conveniently simple to use and user friendly.With it's back clip it can hook on backpacks, pockets, belt, running gear, armbands.Lightweight and VersatileAbout the size of a car key and weighing less than 1 oz., these lights can be attached to pet collars, backpacks, helmets, and jogging or walking gear. Use the included fasteners to securely strap the lights onto boating bows and sterns, drones, bicycles, arms, wrists, and ankles. Perfect for use as a bike rear, back, and tail light.Weather Resistant Perfect for use in rain or snow, daytime or nighttime, and summer or winter. Count on them to keep you visible and safe during any outdoor activity in any weather.Package KitIncludes 2x red + 2x blue LED safety lights with 8x batteries preinstalled, 4x velcro tape, and 4x mini screwdriver for easy battery replacement.