This is a set of red and white rechargeable lights for use as bicycle head and tail lights. They each can be operated in four modes (solid bright, solid dim, 2 flashing modes). They are nice and bright and, in spite of their small size, they put out a lot of light. They will illuminate the road ahead and provide safety to the rear.
They can also be used as hiking lights, clipped to your belt and, in some cases, your hat. Included are 2 charging cables, 4 mounting straps, instructions. You will be happy with this light set.