This movement has been around for a long time, but it is still a very popular movement used. We often got asked about this movement. The movement is nearly identical to the Venus 175 as parts are interchangeable. The only differences or improvements to the Venus 175 are the increased beat (the Venus had only 18000 bph vs Seagull’s 21600 vph) and an added incabloc style shock absorber.
It is a really nice movement as it has something like Genève strips and blue screws.
Let’s see some pictures:
- A mechanical chronograph with 2 registers (small seconds at 9H and 30 min counter at 3H)
- Diameter 31.3 mm
Power reserve: 38 +/-2 hours
Accuracy acceptable at factory: +30 to -10 sec per day
In real life, depending on individual cases, accuracy can be +15 to +5 sec/day with some samples keeping exceptionally good time at +2 to +5 sec per day. It keeps time well if it is fully wound.
In some cases, power reserve can be up from 36 to 50 hours, if it is fully wound and properly used. The reason for this is that the mainspring is designed to potentially have a power reserve of 50+ hours, but to reach this level, the movement must be QC-ed and the whole watch must be perfectly assembled. However, as with any hand-made products, every watch may behave differently.
Comments (2) Mar 19 2009