Hi all! Long time lurker, first time poster.

I'm looking to purchase a lovely 1960's Memovox (855) with a 825 calibre and I have a few questions:

1) What type of power reserve should I expect on these watches?

2) The 825 calibre uses a bumper automatic movement. Outside of feeling the bumper move on your wrist, how does the performance compare to a modern automatic movement? I ask because I've held one of these watches and the hands didn't seem to move much when I put it on my wrist. I wasn't sure if there was an issue with the watch or the bumper tech itself just doesn't perform as well and I should adjust my expectations.

3) Anything else I should be on the lookout for?

Any help would be greatly appreciated! Thanks in advance!