Underwater LED Light Ø137.5 mm, Stainless Steel, IP68 – White or Blue (4 or 6 LEDs)

The Ø137.5 mm LED Underwater Light delivers high-output illumination with premium construction to brighten the waters around your vessel. Its housing is crafted from solid 316 stainless steel, measuring 137.5 mm in length and 68 mm in width, with a low-profile thickness of 24.3 mm, ensuring both durability and a sleek look. Designed for surface mounting on the transom or hull, the fixture protrudes minimally (only 24.3 mm) and is secured with stainless steel screws (included). A 1.5-meter twin-core cable is pre-attached and sealed, so the unit is fully submersible (IP68) and ready for continuous underwater use.

Variants & Specifications: This model comes in two power configurations – with 4 LEDs or 6 LEDs. The 4-LED version uses approximately 10 W total (4 × 3W LEDs) and emits roughly 372 lumens of light. The 6-LED version is brighter, drawing up to ~14 W for about 603 lumens output – a great choice for larger boats or owners seeking maximum illumination. Both variants operate across 10–30V DC input, making them compatible with either 12V or 24V onboard systems. You can select either White LED (for the brightest, most visible light) or Blue LED (for a stylish, cool-toned glow in the water). The blue light option produces a softer brightness (around 100–160 lumens in the 6-LED model due to the human eye’s response to blue), but it creates an especially striking effect at night.

Application & Recommendations: Mount the light on your boat’s transom or hull wherever you want to illuminate the water behind or below. The white LED variant is recommended for maximum visibility – ideal for swimming areas, night diving illumination, or general safety lighting. The blue LED variant is perfect for creating an inviting ambiance and can even help attract fish (useful for night fishing), as the cool glow is less disturbing to marine life. The two power options give you flexibility: the 4-LED model suits smaller vessels or those looking for accent lighting, while the 6-LED model throws a significantly larger amount of light – excellent for yachts and cruisers with wide transom sections. For optimal effect, many boaters install two units – one on each side of the transom – to cover a broad swath of water. Thanks to the wide 120° beam angle, even a single light covers a large area in a beautiful fan of illumination. Installation is straightforward: surface-mount the unit using the provided gasket and screws, and connect it to a switched DC power source. All external hardware is stainless steel and the internal electronics are fully potted, so the light is vibration-proof and corrosion-proof for long-term service. Enjoy enhanced nighttime aesthetics, improved visibility around your boat, and the peace of mind that comes with a robust, marine-grade underwater lighting system.