No. 4 Lights up when you insert the battery and close the cap. It demonstrates fish-attracting effects with a variety of color changes and flashing time variations. Completely waterproof, supporting depths up to 300m. Please tighten securely to prevent water ingress before use. 【Ideal for night fishing】 At night, the flashing light attracts various fish such as squid, horse mackerel, Japanese cutlassfish, sardines, bass, and shrimp. Weight (approx.): 28g (body only) Batteries used: 1 AA battery (not included) Flashing type: Flashing Colors: Blue, Red, White, Green, Rainbow Thank you. CMD Fish Attractor Light Underwater Light LED Fish Attractor Light Set of 3 Completely Waterproof High Brightness Colorful 12cm Battery Operated Night Fishing Sea Fishing Squid Fishing Fish Attracting Lamp Brand: -