Used a few times after purchase and then stored in a warehouse. Will ship with usable batteries installed. Also good for firefly squid, etc. Battery-powered LED Underwater Fishing Light Attracts fish and stimulates their appetite! LED underwater fishing light The LED version of the popular underwater fishing light is now available, equipped with the "1/f fluctuation" (AUTO) mode. The white LED attracts bait, and the 500nm LED, which fish react to the most, along with the "1/f fluctuation" stimulates the fish's feeding behavior, leading to a sure catch. Equipped with a 500nm (blue-green) LED, the wavelength that fish react to the most. Stimulates fish feeding behavior with the "1/f fluctuation" of light. The white LED allows for good observation of the underwater conditions. Target fish: Hairtail, horse mackerel, squid, mackerel, rockfish, Japanese halfbeak Notes: Please use alkaline batteries. It will not sink if you use manganese batteries or rechargeable batteries. An external weight of 80 gou (approx. 300 grams) or more is required. Product Specifications: Light source: White LED x 8 Blue-green x 12 Batteries used: Alkaline batteries, size D x 4 (sold separately) Battery life: Full illumination: Approximately 10 hours continuous Auto mode: Approximately 40 hours continuous *At 20°C *When using Panasonic alkaline batteries Size: Approximately φ123 x 300mm Weight: Approximately 1.6kg (including alkaline batteries) Accessories: 30m rope, rope winder