Each Green Glow Dock Light Lamp is individually and meticulously hand crafted using a three step state of the art water sealing process. This quality workmanship creates a superior product and ensures dependability in the harsh underwater environment. These green underwater fish light bulbs are rated to last 2 to 3 years of nightly use. All our underwater fish lights are perfectly suited for salt water. Our bulbs are self-cleaning, which means barnacles will NOT grow on the bulb. This is not the case with LED or a covered bulb system. Our underwater fish lights will also work great in fresh water. Freshwater fish love our lights. Our underwater fish lights work in lakes and rivers, fresh or salt. They will attract the fish no matter the species. The Green Glow Dock Light Systems are very economical - adding only a few dollars to your electric bill a month. Our underwater dock light kits are neighbor friendly because the light is focused underwater, which allows more effective lighting. Above water lighting attracts unwanted insects, creating a problem with pests, but with our underwater dock lights, unwanted bugs aren't a problem. It just takes minutes to mount the box, place the bulb in the water, and plug it in. Our underwater fish light kits include everything needed to enjoy your new light that same evening. Our bright series of lamps are the most popular underwater green fish light. Similar bulbs have been used by most underwater light companies for the past 10 to 15 years. If you have seen a green underwater light in the water this type of bulb is probably the light you were seeing. All our underwater dock lights are assembled here in the USA by GreenGlowDockLight.com. We use quality UL and UL Recognized Components in our underwater light kits. Many of our competitors don't include a Safety G.F.C.I. plug with their lights. This is a must have near water. We ship our orders out the same or next business day. We ship via UPS or Fed Ex. New, We will ship-out the same or next business day.