/fa/ - Fashion

>>14112662
Here, have a perfectly smooth sweep on a quartz.

>>13702312
The 5S21/5S42 uses a vial of viscous liquid and a hairspring to damp the 4Hz stepper - you can see in that webm >>13702311 that the wheel in the bottom right steps 4 times per second but the wheel closer to the center moves smoothly. It wasn't a very practical design; some surviving examples have a cracked vial and all the liquid has leaked out. I would also not be too surprised if Seiko decided to end the 5S21 line (which they did in roughly 1991) to avoid competing with spring drive.

That said, they're cool watches, and they're not too expensive. The 5S42 is the 20spy HAQ version from the majesta line; the 5S21 is present in a number of case references, labeled dolce, spirit, and others.

>>13684160
thanks anon

>>13669665