This is a National emergency signal light, model FF-148C. Manufacturer: National (now Panasonic) It was sold from the 1970s (Showa 50s) as an emergency signal device to be kept in automobiles. It's a Showa-era retro product. Functions: In addition to the red light as an emergency signal, it has a dual function that allows it to be used as a regular flashlight. Power source: Uses 2 single batteries (batteries not included). Design: The blue body is a characteristic of Showa-era products, and it was popular as a car accessory at the time. This item has been stored with almost no use. Operation has been confirmed with batteries. No rust is observed. No box, batteries sold separately. Thank you for viewing.