| Manufacturer | ISA |
| Caliber Number | 8176-2050 |
| Type | Quartz |
| Diameter | 11 1/2”’ (25.6mm) x 3.70mm thick (5.7mm total height) |
| Battery Cell Number | 399 |
| Hand Sizes | 150/90/20 |
| Jewels | 3 |
| Functions | Hours, minutes, small seconds, date, second timezone (GMT) |
| Country of Manufacture | Switzerland? |
| Known Models | Android Gauge GMT, Invicta Russian Diver 5855 |
The ISA caliber 8176/2050 is a quartz movement with a small seconds subdial and a central 24 hour/GMT hand.
Some of the topics covered in this caliber listing:
Swiss Made or Far East?
The movement shown here was found in an Invicta Russian Diver watch that says “Swiss” on the dial and caseback, however, the movement itself says China and Far East. ISA officially lists this movement as Swiss Made and Far East Assembly. This is ambiguous, and it’s unclear why they use the term “Far East” and not
China on their documentation.
Similar Calibers
On their site, ISA has three listings for the caliber 8176 (8176A, 8176B, and 8176C). This post is for the 8176B aka 8176/2050. It has a GMT, date, and small seconds function while the other two variations have alarm functions as well.
Replacement Price:
At the time of this post, this movement was found at replacement prices of $24.95 USD.
Gallery:
Video:
Additional Resources:
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