Commercial-grade fish-attracting light delivers fail-safe operation down to depths of 1,000 meters – ideal for swordfishing. Four bright LEDs light up the whole body for maximum attraction. Hydrostatic switch activates lights when immersed in water. Rugged injection-molded body sinks and has a waterproof design with O-ring seals. Use the interlocking design to connect multiple lights. Manual on/off switch. Operates on two AAA batteries (not included). Per each.