Larlansz 90LED Underwater Boat Lights — Blue, Pack of 2, 4500LM IP68 Surface-Mount, SUS316 Stainless

These lights combine a corrosion-resistant SUS316 stainless steel face, high-strength PC housing, and a seawater-rated waterproof seal to provide reliable underwater and transom illumination. Designed to run on DC10–30V systems, each kit includes two 90-LED modules with 4500LM output, 120° beam spread, and 1m cables plus mounting hardware for straightforward installation.

How bright are these lights and what does that mean on the water?

The two included 90-LED fixtures produce strong accent illumination (rated at about 4500 lumens combined) that enhances visibility around the transom and cockpit without blinding. The 120° beam angle gives wide, even coverage that’s ideal for boarding areas, underwater ambiance, and close-range work around the stern.

• 4500LM total output across the two lights for vivid blue illumination
• 90 LEDs per module for uniform, low-flicker light
• 120° beam angle to wash steps, transom, and nearby water
• Blue light option chosen for comfortable mood lighting and premium look

Will these lights survive marine conditions and underwater use?

Yes — the Larlansz fixtures use SUS316 stainless steel faces and a high-strength PC inner shell with specialized waterproof glue to resist corrosion and maintain a watertight seal. They are built to IP68 standards and rated for submerged use, making them suitable for transom mounting and other near-water placements.

• IP68 waterproof rating for continuous submersion
• SUS316 stainless steel front plate resists saltwater corrosion
• Durable PC inner housing resists impact and cracking
• Marine-grade sealant applied for reliable underwater performance

How easy is installation and what power requirements are needed?

Installation is designed to be simple: the package includes two fixtures, a pair of stainless mounting screws, and 1m pre-attached cables. The lights operate on a wide DC voltage range (10–30V), so they plug easily into most boat electrical systems with standard wiring practices.

• Works with DC10–30V systems—compatible with common boat batteries
• Comes with SUS316 mounting screws for secure surface mounting
• 1 meter cable length for flexible placement and routing
• Surface-mount design avoids complex through-hull installs

What uses are these lights suited for on vessels and RVs?

These fixtures function well as underwater transom lights, cockpit and console accent lights, step and courtesy lights, or night-fishing illumination. Their bright but focused blue output provides ambiance without overwhelming navigation lights when used appropriately.

• Underwater/transom illumination to attract fish or highlight boarding areas
• Courtesy and step lights for safer boarding and dock access
• Decorative accent lighting for pontoons, yachts, kayaks, and RVs
• Compatible with a wide range of small craft: dinghies, bass boats, sailboats, and caravans

Who is this for? Boaters, anglers, and RV owners who want dependable underwater or transom accent lighting with marine-grade materials and straightforward installation will find the Larlansz 90LED Blue Underwater Boat Lights appealing. They are especially useful for users seeking a premium-looking blue illumination, robust corrosion resistance (SUS316), and the convenience of surface-mount installation on vessels and watercraft that run 10–30V DC systems. The product comes with a three-year guarantee and customer support options for exchanges or refunds if you encounter issues.