I have a 750 Honda 4 carb, is the battery a 6 or 12 volt?

I have a 750 Honda 4 carb, is the battery a 6 or 12 volt?

With 4 carbs, I presume it's a motorcycle. You wound up in the car section.
It should be a 12 Volt battery.
Knowing which model/year would be nice.