Ronda caliber 8040.N in Invicta Watch

Ronda Caliber 8040.N

Ronda caliber 8040.N in Invicta Watch

BrandRonda
Caliber Number8040.N, 8040, 8040N
LineMastertech 8000
TypeQuartz
Linges15”’
Diameter
34.6mm
Height5.6mm thick
Battery Cell Number395
Hands1.20mm/0.70mm/0.20mm/1.60mm
Claimed Battery Life48 months
Jewels13
Hacking?Yes
FunctionsHours, minutes, central chronograph seconds, 1/10 seconds counter, 30 minute counter at 9:00, 10 hour counter at 3:00, retrograde day at 12:00, big date at 6:00, small seconds subdial at 6:00
Country
Swiss Made or Swiss Parts
Known Models
Invicta 13686, Invicta Sea Hunter 1064, Invicta Subaqua Noma II (add yours to the comments below…)

The Ronda caliber 8040.N is a multi-function quartz movement with 13 jewels. It is part of Ronda’s Mastertech line.

Pros and Cons of This Movement:

Pros

  • Decent battery life (as long as you don’t run the chronograph constantly).
  • Cool retrograde day of the week at 12:00
  • Big double digit date at 6:00
  • Takes a common battery

Cons

  • No quickset for the day of the week!
  • Small screws are easy to lose during battery replacement.
  • High cost for movement replacement.

Functions:

According to the Ronda website, the caliber 8040.N features:

  • Repairable metal watch movement
  • Very long battery life
  • Power saving mechanism with pulled out stem: Reduction of consumption approximately 70%
  • Very easy handling by two pushers
  • Big date with quick change

As Ronda mentioned, the big date has a quickset function but the day of the week does not. When setting the day of the week, you will have to put the watch in time setting mode and go all the way around until the day of the week indicator points to the correct day.

Movement Drawings:

Ronda 8040.N

How to Change the Battery:

Changing the battery on the Ronda 8040.N isn’t difficult, but you have to be very careful not to lose the 2 tiny screws that hold the battery clamp (battery cover) down. Also, make sure the orange insulator film located below the battery doesn’t fall out. You will need battery cell #395 which you can order here.

  • Once you have the caseback removed, unscrew the two screws and lift up the cover.
  • Put a new battery in with the positive side up (markings on the battery up).
  • Carefully replace the cover, sliding the lip below the movement plate.
  • Replace the 2 screws.

Ronda Caliber 8040 N Battery Cover Off Ronda Caliber 8040n Battery Removed Insulator

Replacement Prices:

At the time of this post, replacement prices for the 8040.N were found in the range of $95.95 to $112.95 USD.

Watches with caliber 8040.N:

This caliber was submitted by Bill. He found it in an Invicta Reserve model number 13686:

“One of Ronda’s more elaborate and expensive Swiss Made Quartz movements. RONDA Mastertech Caliber 8040.N Size 15”’ Found in several Invicta models, and probably other brands also.” -Bill B.

The photo at the top of this post is of an 8040.N found in an Invicta Jason Taylor Chronograph watch.

This caliber was also found in this Invicta Subaqua Noma II.

More watches with this movement:

Additional Resources:

  • Official tech sheet from Ronda here

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Bill Bennett
Bill Bennett
4 years ago

Here are some other Invicta models with the 8040.N movement: Venom 17635, Subaqua 16307, Bolt Zeus 12298/12299, Excursion 17470, Sea Hunter 10721, Sea Base 17983, and Model 22283. Bulova Accutron 63C109, S. Coifman SC0321, and Aragon M.Diver 80Aragon. There are others with this exclusive caliber.

Michael Kelly
Michael Kelly
4 years ago

This is a very cool looking movement with the grande date and the retrograde day of the week. I am glad to see that Wing is now using this movement in his Aragon watches. I will have to check those out. I thinkers the Invicta Excursion is a great looking watch. I’m a sucker for the “mirror polished” look and have an Aragon with that high polished look. I believe it is my favorite watch

Mike C.
Mike C.
1 year ago
Reply to  Michael Kelly

I agree. While I like Invicta I love Aragons designs,Quality and service. I and many others have been able to reach Wing himself with questions or problems and he does everything he can to make his customer happy. When he was on Evine he was the only watch maker that would tell the people live on TV to make sure to screw the crown down to prevent water damage and then explain the damage it… Read more »

Jordi V.
Jordi V.
3 years ago

Bruno Söhnle’s “Marcato” also wears this movement.

Adrian Ross
Adrian Ross
3 years ago

Found this movement Ronda 8040.N in a Tornino Lamborghini

Chris Paluck
Chris Paluck
2 years ago

EDOX uses this in several watches as well.

David
David
2 years ago

This movement is used in the Ruf Pilot Sport 48mm. Haven’t received mine as of this post but aesthetically it is very similar to the iconic IWC Big Pilot and nearly as beautiful.

Sumit Deb
Sumit Deb
2 years ago

Hello everyone. Can anyone help me. I have an invicta tria watch model 19426. The movement is Ronda 8040n with date at 9. The watch is currently not working and movement needs to be changed. I have searched all online stores but they have Ronda 8040n with date at 6. Please help me to find a Ronda 8040n with date at ,9 for my watch

Adonis
Adonis
2 years ago
Reply to  Sumit Deb

What Invicta did was take the Ronda 8040N and turn it clockwise 1/4 turn. This puts the crown at 6, the power reserve sideways at 3, and the big date stacked vertical at 9. It appears to use a custom datewheel to turn the numbers to line up with the new position. You probably can’t find that anywhere and will have to send it back to Invicta to repair, or find one cheap for parts.… Read more »

Adonis
Adonis
2 years ago
Reply to  Adonis

I meant retrograde date at 3 not power reserve.

Sumit Deb
Sumit Deb
2 years ago
Reply to  Adonis

First of all thank you so much for responding to my post. Actually I am from india and have bought the watch online from eBay.com. there is no watch maker in my country who can swap the date wheel for me. I tried to swap but after that the date advances from 1 to 9 but after that it does not advance to 10. Again I can manually change the date wheel with stem position… Read more »

Adonis
Adonis
2 years ago
Reply to  Sumit Deb

Sumit, something is stopping it from hitting the 0 number of the second digit. This is odd sounding. Did you say you already got another 8040N and tried to swap the date wheel yourself so that you can use a new 8040N but with the old datewheel? Do you have any pictures of what you’re working on?

Sumit Deb
Sumit Deb
2 years ago
Reply to  Adonis

Yes. Can you please give me you email so that I can share some pics. I am not able to send you pics through this website as it does not have any option to upload pics.

Sumit Deb
Sumit Deb
2 years ago
Reply to  Adonis

Plz reply…..

Dmitry
Dmitry
1 year ago

Alpina Startimer Pilot Chronograph Big Date

Glenn
Glenn
1 year ago

Mercedes-Benz Classic Rallye Chronograph

Ricky
Ricky
9 months ago

Found this movement is an Aragon Gauge watch

Berry B.
Berry B.
9 months ago

I would like to see this movement without the battery in it. Is that possible?

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