Tissot Caliber 4012 Back

Tissot Caliber 4012

Tissot Caliber 4012 Back

Brand Tissot
Caliber Number 4012
Movement Type Quartz, digital, battery-powered
Lignes 12”’
Height
Unconfirmed
Jewel Count
0
Battery Cell
Unconfirmed
Battery Life
Unconfirmed
Battery EOL?
Unconfirmed
Hand Count 0
Country of Manufacture Switzerland, Swiss made
Known Models
 Vintage Tissot digital models (Add your watch to the comments below…)

The Tissot caliber 4012 is a vintage digital quartz movement from the 1970s.

Not in the Tissot PRX Digital:

Despite verbiage in Tissot marketing materials for the modern PRX Digital T-Classic reissues, the calibre 4012 is not the same movement found in the 2023 pieces.

The Tissot PRX Digital reissue was announced in August 2023, with mentions about the watch being based on a design from 1977. From the official press-release:

“This creation is a daring fusion between the timeless PRX design and the Digital Quartz (with a 4012 Calibre), launched in 1977.”

Caliber Corner hasn’t gotten a hands-on with a calibre 4012 yet, but will update this listing when we do. In the meantime, at the time of this post, there are some movements listed on eBay (here and here, from the seller Global Watch Straps).

Movement Text:

The text that is visible on the raw movements listed on eBay:

Back: SSIH 4300 / SWISS MADE / UNADJUSTED / NO (0) JEWELS

Front: SSIH-QUARTZ / 528 / HA (another has HB) / TISSOT 20578 / 4012 / SWISS

SSIH aka Société Suisse pour l’Industrie Horlogére SA was a Swiss watch company group based in Geneva. It comprised of Omega and Tissot at first, later including Lemania and others. SSIH was part of what eventually turned into the modern Swatch Group conglomerate that owns and operates the Tissot brand today.

Tissot Caliber 4012 Front

Additional Resources:

Not O4012

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DenK
Member
4 days ago

This movement looks like it was from 1977 alright, in terms of electronics manufacturing: poorly-aligned, hand-placed components, uneven soldering … Curiously, I suspect Japanese electronic movements from that era may have looked neater 😛

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