Sarpaneva Korona K0 – new dive watch

A dive watch from an independent watchmakers is something unusual. The extraordinary  Finnish watchmaker Stepan Sarpaneva is not afraid of the unusual and releases his new dive watch, the Sarpaneva Korona K0.

Sarpaneva showed me a prototype of his new dive watch during Baselworld. The size of the titanium case is 46mm and i assumed it would be a bit too big for my wrist. I was proven wrong when i put it on my wrist. The Korona K0 actually fits very well and comfortable!

The new Sarpaneva Korona K0 does not look like the typical dive watch. This high-end sports watch has a remarkable mechanism to operate the internal dive time ring. The dive time ring is in fact, directly integrated into the movement. The movement’s mainplate is modified to incorporate the diver’s timer ring. This unique feature allows all functions to be set by using only one crown. Yes indeed… one crown to set the time and adjusting the internal dive timer ring. Now you never accidentally turn the dive ring during a dive!

The base movement is the trustworthy Soprod A10, which is used in my Korona K1 and other Korona models as well. Besides the modifications for adjusting the internal dive ring, the movement is black nickel-plated and has a perlage finish. Here are the movement’s specifications:

  • 11.5 lines
  • 28800 vibrations per hour (4 Hz)
  • Automatic winding
  • Stainless steel winding mass with white gold masses
  • 42-hour power reserve
  • 25 jewels
  • Black Nickel-plated
  • Perlaged finishing

I already mentioned how comfortable the 46mm titanum case feels around the wrist, which is typical for Sarpaneva watches. Also typical for Sarpaneva watches, is the case’s thickness. It measures only 10mm, which is also adds to the Korona K0 comfort and makes it very qualified for wearing with a long sleeve shirt. Even the Blancpain Fifty Fathom which features Blancpain’s ultra slim automatic movement, is 15.5mm thick. And this is a difference you will absolutely notice when wearing such a high-end dive sports watch with your suit.

The beautiful dial is black diamond coated, which is surround by the internal dive ring. Parts of the dive ring are also diamond coated, however not black but imperial blue. I think the other parts are sandblasted stainless steel. On the dial are round markers with applied Superluminova, which is also applied on the rhodium-plated hands. Easy to read the time in the dark… or in deep waters :-)

The 1.5 mm thick sapphire crystal has several layers of anti-reflection coating on the inside. This is to prevent the anti-reflection coating from getting scratched, something that unfortunately happens too often when the coating is also on the outside. The logo, SARPANEVA, is also printed on the inside of the crystal.

Specifications of the Sarpaneva Korona K0

  • Titanium grade 2, matt finished
  • 46 mm in diameter
  • 10 mm thick
  • Bajonette screwdown crown
  • Water-resistant to 200 m
  • Hands and markers with Superluminova
  • Rubber strap

One downside… you’ll have to wait until next year. The Sarpaneva Korona K0 is available in 2011. For now, one more photo to enjoy this high-end dive watch.

Frank Geelen

Frank Geelen is an expert on Haute Horlogerie and his horological heart beats faster from beautiful hand-finished mechanical movements. He loves to explain all technical details of complications like tourbillons, minute repeaters, constant force escapements and column-wheel chronographs and he has been doing that for more than seven years. Besides publishing daily here at Monochrome Watches, Frank also writes for several other publications, both online and offline.

View all articles by Frank Geelen

2 Responses to “Sarpaneva Korona K0 – new dive watch”

  1. Dive Watch says:

    This watch is water/pressure tight down to 330 feet., so technically it can be used for diving. Breguet would not
    enable that depth, unless it expected some owners to use it for diving down that deep, or to impress others with
    that ability.

  2. mono says:

    @Dive Watch… The Sarpaneva Korona K0 can go down to 200m or 660 feet, not like you say 330 feet. This is more than enough for recreational diving, because for this kind of dives you don’t submerge deeper than 30-40 meters. One of outstanding features is that it’s only 10mm thick!
    No idea which Breguet you mean, maybe you could specify?

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