- Custom fit and universal compatibility: The navigation light is universal for pontoon boats, speed boats, passenger ships, cargo ships, cruise ships, fishing boats, and more. - Premium quality construction: Made from stainless steel; solid, rust resistant and durable. - Reliable function for safety: Waterproof and low power consumption; provides strong support in severe conditions; red for port side and green for starboard side. - Easy to install: Simple to connect and install; black line is negative electrode and red line is positive electrode. - Use scenarios: - Docking a pontoon or maneuvering at night with clear port and starboard indication. - Night operation on a cargo or fishing vessel in rough conditions, where durability and waterproofing are important. - Coastal cruises or passenger boat navigation with low power draw to minimize battery use.