RehaDesign’s wUnderglow Wheelchair Lights comes with two lights. The first light emits a strong white beam. The other shines a multi-colored light that flashes colors, similarly to a disco. The clip quickly attaches to the seat sling to allow it to be rotated and pointed in any direction. The lights also have an ON and OFF switch that is easy to use. These lights can be used for safety purposes to improve visibility at night. For more info about our Wheelchair Lights, please view this informative video on our YouTube channel. For more products that improve user visibility, please consider our wheelchair reflectors Wheels on Fire and our Stash-N-Flash Wheelchair Backpack.