CWC vs MWC G10 Test

CWC GS2000 vs MWC 100m Water Resistant G10



Sometime back I received a call from Dieter Kessler at MWC in Switzerland who asked me if I would like to make a comparison test between the MWC 100m G10 and the CWC GS2000. Having previously compared the 50m MWC G10 against the CWC G10 which is also 50m water resistant I thought it worth asking him to ship me one over and I would take a look. Five days later the watch arrived and I then made a quick comparison visually to a CWC in my collection. Below I have summarized the main differences.

CWC GS2000
A tried and tested old favourite but only a 50m water resistance rating.

The Review:

I first of all decided to measure the new MWC and discovered it was much larger than the CWC. Below are the dimensions for comparison:

CWC GS 2000

Case Diameter: 36mm Excluding the crown
Case Diameter: 38mm Including the crown
Lug to Lug: 42mm
Thickness: 10mm
Strap Size: 18mm

MWC 100m Screw Crown G10

Case Diameter: 40mm Excluding the crown
Case Diameter: 42mm Including the crown
Lug to Lug: 46mm
Thickness: 13mm
Strap Size: 20mm

Once I had the measurements it was clear that one of the main differences between the MWC and CWC is the size. Oddly the increase in dimensions was not immediately apparent but when the MWC watch is placed next to the CWC it looks a great deal more substantial. The next thing I did was examine the finish of the cases. The CWC had a satin finish and was very consistent in appearance and well made the MWC was equally well made and had a dull matt sand blasted finish which I haven't seen recently on a CWC although some of the older models employed a similar finish. Once I actually started to check the features I confirmed that the MWC has a screw down crown as opposed to the push in winder on the CWC, the MWC also has a screw caseback, the CWC has push on caseback but clearly these increases in spcification by MWC were needed to meet the 100m water resistance requirement. I next removed the caseback of the MWC and found it uses a Ronda 715li movement with Lithium battery. My guess is that the MWC will run for at least 7 or 8 years between battery changes although Ronda quote 10 years  and that might be correct although I consider it theoretical. The CWC should run three years between battery changes.


I tested both watches over a period of two weeks and both were accurate to within a couple of seconds. It was interesting down the local pub that most ex military friends preferred the MWC but could not say why and I am of the same opinion but in reality it comes down to the dull matt finish and the increase in size. The popularity of larger watches means the MWC looks much more contemporary and meets current market requirements but it goes further than that because the other benefit is that the MWC is much easier to to read. The CWC uses white paint which is slightly sharper compared to the light green paint of the MWC but the extra size of the MWC dial more than compensates and the MWC wins overall. As far as night performance both use Luminova and were visible for over 5 hours. The only other significant difference between the two watches is the CWC uses a acrylic / perspex crystal where the MWC uses hardened mineral glass, in my opinion there are benefits to both because Acrylic will not tend to shatter but is easily scratches where glass can shatter on impact but is much more scratch resistant. The final test was to pressure test the MWC and I was surprised to find it held until 145m which is 45 metres beyond the claimed water resistance of 100m.

MWC G10 100m with 10 Year Lithium Battery


This is a difficult one because I like the GS 2000 from CWC and it is one of the watches in my collection which I use regularly. If the question is which do I prefer between the MWC G10 50m variant and the CWC equivalent I have to say it is hard to make a decision because they are very similar in basic specification although the 100m water resistance on the MWC is a big plus. I was advised that the 10 year battery life movement was used by MWC because the 100m variant  could not retain the hatch whilst also meeting the 100m water resistance. Regardless in my opinion I think that the addition of a screw caseback more than makes up for the loss of the battery hatch anyway. The other factor is that the MWC being bigger is a plus for some people but a minus for others because for people with small wrists of women in the military the MWC might be too large.

It dawned on me which testing the MWC that it was actually closer in some ways to the PRS-10 Precista which I also own and is unfortunately no longer made but a lot of friends in the military purchased these and found them superior to the CWC and they also used the same 10 year Battery Ronda 715li movement as the MWC. The finish of the two watches is slightly similar with the PRS-10 being bead blasted and the MWC 100m G10 being sand blasted and having a slightly coarser finish.

The dimensions of the Precista PRS-10 case are as follows: Diameter 38.6mm, Lug to Lug 42.4, thickness 11.25mm. This means the Precista falls right in the middle between the CWC and MWC models. The MWC in fact shares some characteristics with the Precista such as the screw down crown and screw case back but the Precista shares the perspex crystal with the CWC. 

Precista PRS-10 (a personal favorite)

Ronda 715Li movement specification: 

Diameter: 26.20 mm
Movement height: 4.60 mm 
Jewels: 5 
Date: Quickset
Finish: Gilt 
Battery: CR2016 Lithium 
Battery voltage: 3V 
Battery Life: >10 Years 
Instantaneous rate (T=25°C): -10/ +20 sec/month 
Resistance to magnetic fields: 18,8 Oe 
Resistance to shock: NIHS 91-10

So I guess it comes down to which watch would I buy if I was looking to get one tomorrow? As a collector it must be kept in mind I own both a CWC and Precista already and that I have ordered a MWC 100m G10 after writing off the test model in the pressure test. For me the increased size of the MWC is a big plus because I have always felt that the other two look a little small on a large male wrist although I wear both on a regular basis and clearly people with smaller wrists or who prefer a lighter watch might be happier with the CWC or the Precista. The other factor is that both the Precista and the MWC are 100m water resistant and both are cheaper than the CWC although the Precista is not currently available, if I was buying a watch and could opt for any of the three it would be the MWC, closely followed by the Precista, the CWC would be a distant third because it is just not in the same league as far as specification goes when compared to the MWC and the Precista. This is because you just can't compare a watch with 100m water resistance, screw caseback and screw down crown with a watch that lacks these features. I think this watch took the MWC G10 range to an entirely new level.


Precista (Not currently available)
CWC  £185.00 (($229.00 / €217.00) see CWC G10 2000
MWC £145.00 ($180.00 / €170.00)  MWC G10 100m 

The other watch that interests me is the MWC with Tritium because at £249 it is not dramatically more expensive than the CWC but for nighttime performance it would win hands down, slightly dearer than the MWC at £265 is the Traser P6506 but whilst it has 200m water resistance with a Ronda 517.6 DD movement you are back to a three year battery life so its all swings and roundabouts with the decision coming down to exact requirements and styling issues..


MWC G10MKV GTLS Tritium Model                                            Traser P6506 also with Tritium GTLS