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Jens Koch

Editor

Even as a young child, Jens Koch was fascinated by technology. After leaving school, he considered studying engineering, but decided to pursue his second passion, literature and language, and studied German and media studies. In 2001, these two interests came together again when he began testing watches for Chronos magazine. Understanding and explaining every detail of a movement and complication is still a challenge that appeals to him.

Articles by Jens Koch

Erwin Sattler Chronograph II Classica Secunda, Tutima Saxon One Chronograph
IWC
Time Machines: 7 Automotive-Inspired Retro Watches - PORTFOLIO
A classic car is a time machine into the past. But what about the smaller machines that measure time’s passage? Which watches would harmonize best with a vintage car’s styling? Fortunately, the retro trend in watches is bigger than ever. Here are seven suggestions, photographed by our own Nik Schölzel.
4 minutes
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Jens Koch
Sep 10, 2023
Oris Aquis Date & Sinn U50
Watch Reviews
Understated Divers: A Comparison Test of the Oris Aquis Date and Sinn U50
8 minutes
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Jens Koch
Sep 2, 2023
AP Royal Oak Chronograph
Watch Features
Oak or Oyster? Comparing Steel Luxury Sports Watches from Audemars Piguet and Rolex
7 minutes
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Jens Koch
Sep 8, 2022
Rolex Datejust 41
Luxury Watches
Perfecting a Watch: The Design Evolution of the Rolex Datejust
6 minutes
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Jens Koch
Jul 16, 2022
TAG Heuer TAG Heuer Autavia Calibre 5
Auto Racing Watches
A Cockpit Instrument for Your Wrist: Reviewing the TAG Heuer Autavia Calibre 5
5 minutes
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Jens Koch
Jul 14, 2022
Porsche Design Chronograph
Watch Reviews
Up and Away: We Review a Custom-Built Porsche Design Chronograph Inside a Porsche 911 Turbo S
9 minutes
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Jens Koch
Feb 14, 2022
Edited_2
Watch Reviews
Made in Monaco: Testing the TAG Heuer Monaco Calibre Heuer 02
The brand-new TAG Heuer Monaco Calibre Heuer 02 is the first true manufacture chronograph in this legendary watch collection. Is it the best of all time?
6 minutes
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Jens Koch
Feb 11, 2022
Panerai Luminor Marina 1950 3 Days Acciaio -wrist
Watch Reviews
Diving with the Panerai Luminor Marina 1950 3 Days Acciaio - WATCH TEST
In this watch test feature from the WatchTime archives, a frogman re-creates a dive from the 1950s to test the historically inspired Panerai Luminor Marina 1950 3 Days Acciaio.
10 minutes
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Jens Koch
Nov 24, 2020
Rolex Day-Date - front
Watch Reviews
A Watch for All Seasons: Rolex Oyster Perpetual 39 - WATCH TEST
If you want just one, all-purpose watch, our watch tester says Rolex’s recently introduced entry-level model, the Oyster Perpetual, might be it. Find out more about in this in-depth review of the Rolex Oyster Perpetual 39.
7 minutes
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Jens Koch
Jul 9, 2020
Rolex Sea-Dweller - soldier
Watch Features
A Full-Grown Classic: Reviewing the Revamped Rolex Sea-Dweller - WATCH TEST
11 minutes
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Jens Koch
Apr 30, 2020