1. Where is the WS code on a Tissot PRX?

On the PRX and most modern Tissot watches, the WS code is engraved on the stainless-steel case back. Look for the letters “WS” followed by a 9-character alphanumeric code.

2. What’s the difference between the WS code and the reference number?

• WS code: Unique to your individual watch; used for authenticity checks and warranty registration.
• Reference number: Identifies the model/variant (always starts with “T”). For example, T137.410.11.041.00 is a PRX quartz model. This is not a serial number.

3. Can I verify my Tissot serial number online?

Yes. Use the WS code or RFID on the official Tissot Register My Watch portal to confirm authenticity and activate your digital warranty.

4. My code isn’t recognized—what should I do?

First, double-check that you entered the WS code correctly. If it still doesn’t work, contact Tissot customer service or visit an authorized dealer. They can confirm authenticity and assist with registration.

5. How do I check a vintage Tissot serial number?

Older Tissot watches (pre-2014) don’t use WS/RFID. Instead, serials may be found inside the case back or on the movement. A professional watchmaker can open the watch safely and help you date it using serial tables.

✅ Tip: Always make sure the WS code on your watch matches the code on its warranty paperwork or digital registration. This is the strongest proof of authenticity.

Visit watchesdistribution.com to view more Tissot models.