Ideal for "topside" use under the gunwales, along the edges of steps, in cabins. Pretty much anywhere you need accent lighting on your boat. They are very low amp draw and RGB (any color any time) You can choose a color by simply wiring them up in accordance with the instructions and wire color or you can use a RGB controller. We offer two types of controllers on our accessories page. These lights provide 3 watts of power and each pull less than one amp. Unlimited possibilities when used with our controllers. Dim, fade, strobe, bluetooth, wifi, flash and to music. Made of stainless steel, 4' of wiring, waterproof and just a cool little accent light all in the diameter of quarter! Requires a 5/8" hole to mount.