Used Firefly Plus Strobe and Flashlight

The Firefly Plus is a dual purpose waterproof light. One end is a flashing strobe and the other end is a flashlight. The omni-directional strobe is visible up to 1 mile on a clear night. The flashlight beam is 6 feet wide at a distance of 3 feet. Waterproof to 328 feet (it floats if dropped overboard). Operates on 2 AA alkaline or 2 AA lithium batteries (not included). Has a flash rate of 40-60 flashes per minute. Operating life: strobe 10 hours; flashlight 2 hours continuous. Size: 5.3 x 1.5 inches.