The lights are available in 12v or 110v.... You can run them underwater or out. I prefer to run them just under the water as it does not attract bugs and there is no glare. They are a spot light and illuminate 15'+ they are fully adjustable in somewhat clear water I can easily gig in 2-3' of water. We also use them for shrimping .. they are available in several colors. The light set comes with quick detach mounting plate for easy removal during travel. The 12v will run for a solid 13 hours on a fully charged deep cycle Batt. The four light set is $415 plus shipping... We also carry walking lights and two and three light sets. They come fully assembled with the exception of attaching the conduit with two jam nuts that are provided this is for shipping purposes.. we also offer custom mounting brackets as well to fit any application.. if would like to discuss further please fill free to call 772-360-9525 or email me at firstname.lastname@example.org.