| Manufacturer | Oris |
| Caliber Number | 677 |
| Base Caliber | ETA 7754 |
| Vibrations Per Hour | 28,800 bph |
| Power Reserve | 48 hours |
| Jewels | 25 |
| Functions | Hours, minutes, small seconds, chronograph, gmt, date |
| Country of Manufacture | Switzerland |
| Known Models |
Oris TT3 |
The Oris caliber 677 is a modified version of the ETA/Valjoux caliber 7754.
The caliber 677 in the photo above was found in this Oris TT3 Second Time Zone Chronograph watch.
Have you had experience with this caliber from Oris? Talk about it in the comments below.
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