Quote Originally Posted by MattKing View Post
Sorry Stone, the RB67 doesn't use a battery at all.

Some of the accessory metering finders do use a battery.

I think you are thinking of the RZ67.
Yes you are correct Matt, I was talking about the RZ67, I misspoke and I apologize if I mislead anyone. Now I know why people choose the RB system over the RZ system even though the RZ has slightly sharper lenses and finer focus tuning... hmmm...