Generic 2Pcs LED Silicone Mountain Bike Bicycle Front & Rear Lights Kit Set This is a brand new Rear Knog Frog Strobe LED bicycle light. It is a rated at 25 lumens and lasts up to 80 hrs in flash mode,very bright for such a small light It takes 2 x 2032 batteries and is very weather resistant. 19 grams Increase the safety of cycling Integreted clipping, easy to instal and fit