Demonstrate the quick date change mechanism on watch movement

While assembling this Chinese wrist watch movement (Replica Rolex),

 I thought I would do just a short video to demonstrate the quick date change through the keyless mechanism on watch movement.

Bergeon No 5355 Mainspring Winder Set

Due to having to work on more wrist watches, and I like to remove the mainsprings from the barrel when servicing movement. I needed smaller diameter barrel mainspring winder set as my pocket watch mainspring winder is to large.

Bergeon No 5355 Mainspring Winder Set

After looking for weeks on Ebay, and the mainspring winder sets were going for nearly full price!

Bergeon No 5355 Mainspring Winder Set

So not winning any bids, I took the plunge and forked out for a new Bergeon No 5355 Mainspring Winder Set.

Bergeon No 5355 Mainspring Winder Set

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