Here’s my mini short review of Seiko Sumo.
Well, it’s a 6L15 with hand winding and hacking feature. I really like hand winding my watch. Besides reading time and adjusting time, hand winding is the closest thing with interacting with the watch.
Most of my Russian watches are hand windable, they tend to go “click click click” when you wind, it’s the click going against the ratchet wheel. The click also prevents the main spring from unwinding.
Anyway, on newer movements, like 6L15 and ETA 2824, the winding goes without such clicking. It’s has a sandy feel, like sticking something into the sand and twisting it.
That’s the main difference on hand winding for me and the hacking is a bonus feature.
