I own 14 double and single Wolf watch winders. They work on both A/C and D/C power, and run silently. Most of my collection have multiple complications and the winder saves me a lot of time. I also recommend that you only buy singles and doubles that can run on batteries which will allow you to store the winders in your safe if you must leave for an extended period of time. By the way good choice of P.P. You can see my tag is a P.P 5205-001 and I also own the 5396-013 with the slate grey dial and applied numerals.
hey, Mark hyeong! This is Eunseok, your cousin :) Heard that you're visiting Korea soon. It'been a quite long time.. hope to see ya! btw, I love your videos :) enjoy seeing your fascinating belongings!