Speaker 4 inch - 8 ohm 4 watt shielded
Shielded 4 inch square speaker, 8 ohm and 4 watt. Cone measures 4 inches across, and hole-to-hole measurement is 4-5/8 inches.
Fits late model Stern as well as many Data East and Sega pinball machines.
Depending on availability, speaker may be a slightly higher wattage and is considered an upgrade.