If you're looking for a great way to bend those small watch faces without the bulk of an arbor press….this looks to be a good alternative. A bit on the pricey side, but, hey!
We used a similar machine when Dawn did stained glass---to bend metal framing for round stained glass panels--needed the first half to three-quarters of an inch to "get a grip". THEN it started a controlled bend.
For the price of one of those machines, I can get at least 3 HF arbor presses (with coupon). The arbor press' footprint is not that much larger than the bending thingy.