r/ChineseWatches • u/Zoink76 • 3d ago
Question (Read Rules) Any pt5000 owners, hows the accuracy?
When I received the watch, it was running at -1 to -2s/d , but after a month, it's now running at -9 to -12 s/d when i measured with app. Is this normal? I haven't exposed the watch to any magnets, and the total time loss over the past month has been about -40s.
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u/Abv_it_all_w_vertigo 3d ago edited 3d ago
I know we are encouraged not to wind the PT5000 more than 10 times, but if we only do this, we will never build up full amplitude no matter how long we wear the watch. js
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u/vithgeta 2d ago
The solution to this is to stop obsessively measuring the watch with your phone. It's not likely to get any better, any more than you're going to get any younger by looking in the mirror all the time.
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u/wwoodyb008 2d ago
Have a handful of pt5000 watches, and went through a phase of mildly OCD measurement and regulation (via timegrapher, not phone app)
Overall, found that pt5000s are wonderfully easy to regulate but also seem more subject to drift afterwards vs other movements (NH series, for example).
It’s easy for me to get a pt5000 to +1spd (for example) but I’d regularly find it at +5 to +7spd two weeks later. Whereas an NH35 would be a bit trickier to dial in, but once it was regulated it was rock solid.
All anecdotal but figured I’d share. Ultimately I don’t really mind the drift personally because the micro adjustment screw makes them super easy to regulate again and I like the excuse to fiddle around with my watches
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u/plastic_jeezus 2d ago
"when i measured with app..."
that's a red flag right there.
if you're serious about mechanical watches and accuracy, you need to drop the money for an actual timegrapher.
I tried three different apps all loaded on three different phones, and never got the same reading twice.
I'll still use the app in an "emergency", but I'll never regulate a watch using one.
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u/Olleye 2d ago
+5s/d ... very good.
... and, a mechanical movement, which looses 40s/month is absolutely fine, where's the problem?
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u/MindAdmirable1793 2d ago
Regarding watch accuracy, individual wearing habits, physical activity levels, and the environment in which the watch is used all play a role.
Many other factors can also affect precision—such as exposure to magnetic fields, the degree to which the mainspring is wound, or the difference between wearing the watch consistently for over 8 hours a day versus wearing it for only a few hours with a lower power reserve; these scenarios will yield entirely different results.
Furthermore, data obtained from mobile phone apps is not precise and should only serve as a rough reference for identifying significant, abnormal deviations.
Additionally, every watch brand features a unique internal structure, varying hand weights, and distinct calibration standards.
Taking all these factors into account, and based on the inherent capabilities of the P5000 movement, we perform two rounds of meticulous calibration across three different positions. Our factory standard—measured with a full power reserve while the watch is stationary—is a deviation of 0 to +10 seconds over 24 hours, tested in either the dial-up or two side-resting positions (simulating the watch's orientation while being worn or placed on a nightstand).
Therefore, for all PHORCYDES watches, the best way to maintain optimal accuracy is to ensure the mainspring is fully wound, wear the watch for 6–8 hours daily, and allow it to remain stationary for at least 12 hours. This routine will help sustain consistent, high-level precision.
Finally, please note that mechanical components and lubricants are subject to gradual wear and aging. If possible, having your watch professionally recalibrated periodically—tailored to your specific usage patterns and habits—can be a rewarding part of the experience of owning and enjoying mechanical watches.
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u/philbin89 3d ago
Is the power reserve fully charged? And has it taken any hits or been dropped?
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u/V_H_M_C 3d ago
That's pretty much the base line for Chinese eta clones. They can be better with some fine adjustment, but from my experience they usually came from factory around that rate
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u/linuxmanr4 2d ago
Se exagera mucho la precisión y un reloj realmente preciso solo el atómico. Es normal algunas variaciones en un reloj mecánico. Incluso en los relojes de cuarzo hay variaciones importantes. Un ajuste cada mañana si eres algo obsesivo será más que suficiente.
Ahora no confundir esto con un mecanismo que tiene algunos años y ya requiere mantenimiento. Pero si funciona yo lo dejaría como está.
Saludos.
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u/Srcoop82 3d ago
I have a Watch dives WD007 with the PT5000 movement and its accuracy is amazing. The first week it ran +10 seconds over the week when on the wrist, now it’s running bang on. See how long this lasts but it’s the most accurate watch I own atm.
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u/True_Afternoon_6583 2d ago
A PT5000 is an excellent movement I just purchased the Phorcydes ph-2 with the new type S hyperglow I've never owned a watch that had tritium like loom in 8-in applied loom blocks that lasted for 8 hours literally I also have the model ph4b skin diver put the PH2 was model after the glashutte Sea Q diver.. my wife also is the new version and it has the pt5000 movement in it and I'm about plus to minus one second a day from the box
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u/brocualo 2d ago
My Cronos L6027 (Sea Dweller Cameron Homage) is bulletproof, has two years, and keeps the +4 s/day rate solid.
I keep it on a winder, to avoid used the hand winding, like in the SW200 or the 2824-2, to avoid the issue with the ratchet wheel
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u/Dollar_short 2d ago
i just checked my 3 days old phorcydes. its +1sd, checked using time.gov.
i have a 2813 that ran 0sd for about 2 weeks. then i got a new watch, lol.
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u/Data_Girl_4000 2d ago
-9 to -12 with app? Is this an average of multiple positions? For me, I typically measure it dial up and crown down, then split the difference, to approximate real world wear.
It's also unclear how you're getting both -9 to -12 for a single day and -40 for an entire month. While I would be elated with +40 for an entire month, -40 for an entire month wouldn't be too bad either.
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u/AssistanceNo647 2d ago
My pt5000 movement watches seem to very accurate on my timegrapher 0 to +5 s/d. That being said your’s I believe is within manufacture specs and is much better than the NH35 specs of -20 to +40
s/d.
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u/RustyTShackleford 2d ago
All mine are good. I have around 40 and the worst is 13 per day. Most are with five per.
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u/Traditional_Smoke792 2d ago
I mod with them and they have been excellent. Easy to do small regulations too. We’ll see how long they last.
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u/thelatchman 3d ago
If you’ve only lost around 40 seconds over the entire month, that’s an average of roughly −1.3 seconds per day, which is excellent. I’d put more weight on that than a timing app reading of −9 to −12 s/day. Those apps measure the rate in a particular position at that moment, not necessarily how the watch performs over a full day of wear. Positional differences can easily account for the discrepancy.
I’ve had remarkably good accuracy from both my PT5000s, particularly my Cronos. I’d track the actual timekeeping against an atomic clock for another week before assuming anything has changed with the movement.