I have owned the 39mm in the past and currently have the Up/Down version....

Jun 17, 2022,18:40 PM
 

The dial colors and details are very similar, except of course for the obvious, Roman vs Sticks, power reserve which I find useful. 


To me, the main difference really is the size, ratio, and wearability. I find the 41mm a better-proportioned watch and also has a better balance on the wrist. I find the 39mm to feel a bit top-heavy since the diameter to thickness ratio is not as balanced. Also depending on your wrist size, the 39mm can look a bit small. 

Either version is a winner, it all depends on your preference. 

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Datograph 39 vs 41

 
 By: Manaf Al-Ghalib : June 17th, 2022-17:39
I know this discussion happened many times in different forums but I’d like to compile it all in 1 place. What’s the real difference between both generations? 1. Dial - roman numerals vs batons - longer chronograph track indices on the 39 - power reserve ...  

Owner of a 39mm here:

 
 By: darrony : June 17th, 2022-18:22
If you like Roman numerals the 39 creates the inverted triangle with the 10/2/6 while the other geometric triangle is the date window with the two sub dials. The 41mm can be argued to have a better aspect ratio or wearability since it’s wider but not thic... 

I have owned the 39mm in the past and currently have the Up/Down version....

 
 By: APOD : June 17th, 2022-18:40
The dial colors and details are very similar, except of course for the obvious, Roman vs Sticks, power reserve which I find useful. To me, the main difference really is the size, ratio, and wearability. I find the 41mm a better-proportioned watch and also... 

Love the Gen 1

 
 By: montecristo#2 : June 17th, 2022-23:58
I love the Gen 1 but I am meh on the Gen 2. I’m not a fan of the Gen 2 power reserve indicator and the dial symmetry on the Gen 1 is just better in my opinion. Also (and I may be wrong about this) but on the Gen 1 the subregisters have a golden hue that g... 

I have and like the look of the first generation as well but....

 
 By: TonyR : June 20th, 2022-01:33
The second generation definitely wears better. The size of the case makes the weight more evenly distributed.

I never tried to analyse the differences as watches are a passion, but

 
 By: Watchlover42 : June 18th, 2022-10:07
when I wear my Gen1 Dato it immediately feels perfectly right and makes me smile. With the Gen2 nothing happens.