The guee cob x led light set consists of a front and rear cob x light which features a super lightweight profile with a quick rechargeable battery taking only approximately 1 hour 40 minutes to charge and giving you up to 15 hours of burn time the design of these guee lights is simple and genius the silicone band allows versatility whereby you can mount the light almost anywhere on your bike including your seat post seat stays handlebar fork or saddle bag the guee cob x light set is conven