Voted #1 Underwater Fish Light by FishingPicks online magazine. 21,000 Lumen Self Cleaning Underwater Light w/50' Lamp Cord Completely Automatic & Maintenance Free Self Cleaning Bulb Design, Built In Photocell Turns The Light On/Off Nightly. For saltwater this is better than any LED dock light system. This HID bulb will prevent barnacles from growing on the glass. No LED system can provide this feature. Arrives Complete With Everything Needed To Enjoy The Same Evening. Installs In Minutes, Plug it In & Enjoy. Safety UL approved GFCI Plug included. 60 Day Risk Free Money Back Guarantee. Green Glow Dock Light was voted #1 Underwater Fishing Light by FishingPicks online magazine. Each lamp is individually and meticulously handcrafted 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. This green underwater bulb is rated to last approximately 2 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 freshwater. Our 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 "Brilliant Series" bulbs are new technology. We are excited to be able to offer these new bulbs. They use equal amount of energy but produce a brighter light (higher lumens output) almost twice as much light. These bulbs also produce a very rich emerald green color. This is NOT a colored or tinted bulb it is clear. Our supplier found a way to create this HID bulb for the purpose of producing a better engineered green underwater dock light. If you are looking for a brighter and greener light, then this is the underwater fish light you want. All our underwater dock lights are assembled here in the USA by Green Glow Dock Light.