The Knog Plus front flasher is a small lightweight universal flasher with USB charging and a high output of 40 lumens. The Knog Plus looks great, is 100% waterproof and has a handy magnetic clamp. It is great for cycling, running, hiking and also on a dog collar.5 light/flash modes USB charging Dimensions: 14 x 66 x 18 mm 40 lumens 100% waterproof Magnetic clamping Lighting time: 2 hrs Magnetic clamping Lighting time: 2 hrs Lighting time: 2 hrs Lighting time: 2 hrs Lighting time: 2 hrs Lighting time: 2 hrs Lighting time: 2 hrs. 4.5-10 hrs. of steady light / 4.5-10 hrs. of blinking / up to 40 hrs. of blinking in Eco mode Charging time: 4 hrs Two types of clamping strips for 22-27 mm and 28-32 mm handlebars + magnetic grip included