Make sure you're visible and safe when riding your bicycle with the Blackburn 20 Lumen Light Set. This 2-piece light set is all you need to add some extra functionality, safety gear and peace of mind to any bicycle. This light set utilizes Glow Tech(TM) COB (Chip on board) technology. Glow Tech(TM) COB technology condenses LED's closer together compared to a regular LED light, giving off an ultra bright glow effect.The white front light is rated at 20 lumens, while the red back light is rated at 4 lumens. Its universal design will fit all bicycles, and it has a quick and easy installation that requires no tools. Don't take any chances with your safety, and install this 20 Lumen Light Set on your bicycle today. 0.16 pound item weight. Glow Tech COB (Chip On Board) technology condenses LED's closer together compared to a regular LED light, giving off an ultra bright glow effect. 20 Lumen Glow Tech COB headlight with three modes (Steady Hi-Beam, Steady Lo-Beam and flash) 10 Lumen Glow Tech COB tail light with three modes (Steady Hi-Beam, Steady Lo-Beam and flash) Headlight run time (2hrs Steady Hi-Beam, 5.5hrs Steady Lo-Beam, 20hrs Flashing) Tail light run time (1.5hrs Steady Hi-Beam, 2.5hrs Steady Lo-Beam, 16.5hrs Flashing) Durable, silicone strap for quick no-tools installation CR2032 batteries included, 0.16lb item weight.