Most accurate mechanical watch?

[SpunkyQ8]

What's the most accurate movement/watch you came across through your years of experience in collecting/enthusiasm ?

For me I'd have to give that to the RM35-01. Unbelievably accurate!

[texex91]

RM011 without question most accurate I've owned.

I mean spot on...other brands have been pretty good (AP was a little hit miss for a few years), but nothing like RM.

[Rockrolex]

My IWC 3756 GST may be my most accurate mechanical watch. It never loses a second.

[Slider817]

I haven't really owned any super accurate mechanical watches, I generally don't keep my watches on winders and I rotate them around pretty often, anecdotally I would say my FP Journe Chronometre Sluverain was my most accurate, followed close behind by my Patek 5146 Annual Callendar.

[incontrol]

My Grand Seiko GMT is amazingly accurate. I am also very impressed with my Patek Philippe watches as well.

[mps354]

My 1815 chrono and fpj cb are my most accurate, usually +/- 1 sec per day

[yjfang]

My FP Journe Octa RDM is extremely accurate, even when I leave it sitting in the watch box for days.

[HL65]

My Lange Time Zone is crazy accurate keeps perfect time. I have had good luck with most of my watches but this one is even better than any Rolex I have ever owned.

[topcat30093]

I am pleased to say that both my Pateks are accurate enough for me.

In fact it has been a long time since I have purposely tested them for their accuracy.

As long as it does not loose more than 30 seconds per day, I am happy :)

[jmiicustomz]

My Marathon GSAR with the ETA 2824-2 is crazy. It gains a few seconds a week. My rolex 6298 loses about 2-3 seconds a day and my omega speedy pro gains about 6 seconds a day.

[jjnd08]

My 15400 has been very accurate, but I think the most accurate was probably my Reverso TT 1931.

[77T]

It's usually the one that was last serviced by my preferred watchmaker. One of the Daytonas is sometimes on the winder for a coupe of weeks between rotation to my wrist. It comes out at about half a minute fast.


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[conkers]

My Jaeger tourbillon. Their tourbillons regularly win the chronometer accuracy awards each year.

[conkers]

this one.

[SpunkyQ8]

Originally Posted by conkers

this one.

Stunner!

[Swearengen]

Probably John Harrison's H5?

[mailman]

The last Sub C I had was dead nuts on. It didn't deviate at all in the year and a half I owned it.

[Ezkill]

Mine are so hit or mess, I mean everything is well within COSC but my two best:

My LV sub is dead on over a 4 week period.

My new VC overseas ran 9 seconds fast the first day after I received it then 3 seconds fast the second and it's been dead on daily for the last 3 days. I'm hoping it turns out extremely accurate because it's always a nice surprise. Not surprised on the first two days as I had to wind it and then give it a bit of a shake to get it moving the first time.

[toneafficianado]

My 2 1/2 year old 216570 Exp II. It's as accurate as quartzes I have owned previously.

[busytimmy]

Originally Posted by toneafficianado

My 2 1/2 year old 216570 Exp II. It's as accurate as quartzes I have owned previously.

Nice one!

My GMT is pretty accurate and so is my Jaeger LeCoultre MUT Moon39... I don't know how accurate - just accurate enough 😁


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[Manofsteelpt]

My most recent Daytona was almost spot on... My current AP is only 2 secs off/day, no complaints on it.

[mspeed76]

how accurate is your 35-01?? mines at +6 a day

for me the good ol AP 2326 was like +1 a day

[SpunkyQ8]

Originally Posted by mspeed76

how accurate is your 35-01?? mines at +6 a day

for me the good ol AP 2326 was like +1 a day

Around 1/2+ a day. Some days dead on

[superstarmar]

My 2 tone SubC Bluesy is spot on at +1/-1
a day .... Love it ... Couldn't be happier

[lapince]

Originally Posted by topcat30093

I am pleased to say that both my Pateks are accurate enough for me.

In fact it has been a long time since I have purposely tested them for their accuracy.

As long as it does not loose more than 30 seconds per day, I am happy :)

Well I wouldn't be happy at 29 sec/day but I usually have watches that in 7-10 days loose/gain around 20-30 sec, so basically around 2-4 sec a day which I find ok, my most accurate if I remember correctly was my BLNR, everytime I checked it seemed to be off by 2-4 sec after 7-10 days so for me that is incredibly accurate and as far as I know never had better, my Patek is not bad also, my AP is not super, when I put it on time and check 5-7 days later like I just did it's always around 20 seconds off, sometimes 40, but I wear my watches 24/7 so sleep with them, I often read that you need to leave them crown up or down at night and I don't do that, maybe the accuracy would be better, but as far as I'm not more than 30sec off I don't care a lot, I check from time to time and put them back on the exact time but I'm not akin a fixation about it...

[topcat30093]

Arnauld what I was trying to say is that accuracy is not a huge issue for me. But you are right. The accuracy should fall within COSC standards👍🏻

[cadillacofwatches]

My Omega, when worn everyday, is almost spot on at +.5 secs a day. However, the longest I have worn the watch in succession is 4 days. My job will not let me wear it everyday.

[Andad]

Ummmmm........

My Seiko Astron.