LED Navigation Light: Designed for safe navigation and signal indication. Features a single-color twinkling light effect that automatically activates in low light and turns off in bright conditions. IP65 waterproof rated, suitable for use in heavy rain, blizzards, and other harsh weather environments. Constructed with high-quality LED and PP/PPS plastic housing. Powered by 2 D batteries (not included), providing approximately 50 days of operation. Ideal for maritime rescue, highway maintenance, field surveys, navigation warnings, and fishing net illumination. Specifications: Material: PP/PPS Plastic; Lighting: Single Color Twinkling; Battery: 2x D (not included); Battery Life: Approx. 50 days; Waterproof Rating: IP65; Operation: Automatically flashes in darkness; Light Source: LED; Weight: 100g; Size: 48x260mm (1.89x10.24 inches). Package includes: 1 x Navigation Light. Note: Slight measurement variations may occur due to manual measurement. Product color may vary slightly due to monitor display differences.