Quote Originally Posted by lxdude View Post
The F3 has one manual speed, 1/60th or 1/80th (I've forgotten), and as I recall, the F-1N will give 1/90th and up if you first take out the battery.
The New F-1 uses the battery only for speeds lower than 1/90. All speeds from 1/90 to 1/2000 plus B are mechanical and do not use the battery no matter battery in or not in place.