|Manufacturer||Hattori aka Seiko Instruments Inc. (SII)|
|Caliber Number||VD53, VD53A, VD53B, VD53C|
|Battery Cell Number||371 (SR920SW)|
|Quartz Type||Tuning fork type quartz crystal|
|Stem||35117/tap 10 or 351892/tap 11|
|Functions||Hours, minutes, central seconds, 24 hour subdial at 3:00, small chronograph seconds at 6:00, 60 minute chronograph counter at 9:00, date between 4:00 and 5:00 or other (see below)|
|Country of Manufacture||Japan|
|Known Models||Invicta Speedway 9211, Pro Diver 15082 (Add yours to the comments below…)|
The SII caliber VD53 is a quartz chronograph movement with 0 jewels. This movement is made in Japan.
Some of the topics covered in this caliber listing:
You may see this movement listed as the VD53, VD53A, VD53B, or VD53C. VD53 and VD53A are the same, this is the first version. The trailing letters A, B, and C represent the caliber evolution. As of June 05, 2018, official technical documents reference caliber VD53C.
Caliber VD53 Date Location:
There are many different VD53 models available. The differences between them is the date window position, the hands fitting type, stem type, or the color of the datewheel. The full list is here. The date is available in the following positions:
- VD53C11 – Date at 3:00
- VD53C144 -Date at 4:00
- VD53C344 -Date at 4:00
- VD53C14 – Date at 4:30
- VD53C12 – Date at 6:00
- VD53C19M – Date at 12:00
The date at 4:30 is the most common version of the VD53 because it is the only one that is a consistently stocked movement and part of ordinary production. The other versions are order based production.
The VD53 is rated at having an accuracy of less than +/-20 seconds per month in normal temperatures.
At the time of this post, replacement prices were found online in the range of $20-30 USD.
Examples of the VD53:
How to Reset the VD53 Chronograph Hand to Zero?
If your chronograph hand isn’t lining up, you may need to reset it. This is common after a battery change. Please comment below if these instructions worked for you.
- Time Module VD53C tech sheet here