This is a set of rechargeable bike lights. There is a 5200mAh headlight and 1200mSh back light and they are charged using USB. They are compact and durable which means that they can stand knocks and scrapes. They are also waterproof and dustproof so suit all sorts of conditions. The bracket that comes with it can be easily adjusted so the illumination angle can easily be changed. The brightness can also be changes. The front light has 3LED lights which can be set to strong, middle and flash light with up to 1200 lumens and the back one has 6 red LED lights with different settings as well.