Sorry,

Due to high interest and limited capacity, we will unfortunately not be able to accept orders for the time being. We thank you for your support and understanding.

Our Collection

1944 Tanfana
1969 DeltaWorks
1941 Grönograaf
1941 Principia
Decennium Tourbillon
1941 Remontoire
Bespoke Watches
Parallax Tourbillon
1896 One Hertz
The horological brothers

The world of Grönefeld

A world where craft, creativity, delight, eye for detail and beauty reign. A world where the horological brothers take the time for a bond that transcends friendship alone.

awards

1944 Tanfana awarded Red Carpet Lady’s Watch

Bart and Tim are proud to announce that the 1944 Tanfana has been awarded 'Red Carpet Lady’s Watch' at the TEMPORIS International Awards 2025.

Proud winner GPHG Award 2022

Great news from Geneva: Bart & Tim Grönefeld were honoured to receive the prestigious GPHG for the 1941 Grönograaf!

Grönefeld wins Best Men's Watch Prize!

Another Grand Prix d’Horlogerie de Genève award :-) The ultimate watchmakers dream.

Grönefeld wins 2 prizes in Warsaw Poland!

So proud to announce that we have won the Classic Watch and the best of the best called Grand Prix in Warsaw chronos24.pl

03
Oct
2025
1944 Tanfana awarded Red Carpet Lady’s Watch

Bart and Tim are proud to announce that the 1944 Tanfana has been awarded 'Red Carpet Lady’s Watch' at the TEMPORIS International Awards 2025.

14
Nov
2022
Proud winner GPHG Award 2022

Great news from Geneva: Bart & Tim Grönefeld were honoured to receive the prestigious GPHG for the 1941 Grönograaf!

CRAFTSMANSHIP BY THE HOROLOGICAL BROTHERS
Craftsmanship by The Horological Brothers.

latest news

02
Apr
2026
Seven Masterpieces, One Collector's Set: 7 Sins

Some ideas refuse to be rushed… How it began: A meeting of two crafts. For nearly 30 years, Bart and Tim have shared a close friendship with Kees Engelbarts — a Dutch master engraver based in Geneva, renowned for his exceptional craftsmanship. Throughout these years, one idea remained: to combine his art of engraving with their horological creations. Grönefeld and Kees Engelbarts had collaborated before, but in 2022 they set out to make something extraordinary. Today, Bart and Tim present the result: A set of 7 timepieces, each representing one of the 7 Sins. A project defined by patience, mastery, and an uncompromising pursuit of excellence.

01
Dec
2025
Wij zoeken horlogemaker(s)

Ben jij een gepassioneerde horlogemaker? En een gedreven techneut die zijn/haar vakmanschap tot in de perfectie wil uitvoeren? Lijkt het je leuk om mee te werken aan onze exclusieve horloges? En niet onbelangrijk: deel jij onze passie voor high-end uurwerken? Dan zijn we wellicht op zoek naar jou!

14
Feb
2025
1944 Tanfana. Gracefully Balancing Art and Precision

We are proud to introduce Grönefeld's first ladies' model: the 1944 Tanfana. This ladies’ watch embraces new design codes and employs some materials not previously seen on a Grönefeld timepiece.

02
Dec
2024
Watchmakers Wanted We're hiring!

Are you a passionate watchmaker? And a driven technician who wants to carry out his/her craftsmanship to perfection? Would you like to work on our exclusive, award-winning watches? And do you share our passion for high-end timepieces? Then we might be looking for you!

02
Apr
2026
Seven Masterpieces, One Collector's Set: 7 Sins

Some ideas refuse to be rushed… How it began: A meeting of two crafts. For nearly 30 years, Bart and Tim have shared a close friendship with Kees Engelbarts — a Dutch master engraver based in Geneva, renowned for his exceptional craftsmanship. Throughout these years, one idea remained: to combine his art of engraving with their horological creations. Grönefeld and Kees Engelbarts had collaborated before, but in 2022 they set out to make something extraordinary. Today, Bart and Tim present the result: A set of 7 timepieces, each representing one of the 7 Sins. A project defined by patience, mastery, and an uncompromising pursuit of excellence.

01
Dec
2025
Wij zoeken horlogemaker(s)

Ben jij een gepassioneerde horlogemaker? En een gedreven techneut die zijn/haar vakmanschap tot in de perfectie wil uitvoeren? Lijkt het je leuk om mee te werken aan onze exclusieve horloges? En niet onbelangrijk: deel jij onze passie voor high-end uurwerken? Dan zijn we wellicht op zoek naar jou!

Making the best watches in the world. We love every aspect of it. Coming up with new ideas together, bringing them to life in a design that captures the imagination, working with infinite patience to achieve perfection: it is a blessing to be able to work together every day with so much pleasure.

the horological brothers

Making the best watches in the world. We love every aspect of it. Coming up with new ideas together, bringing them to life in a design that captures the imagination, working with infinite patience to achieve perfection: it is a blessing to be able to work together every day with so much pleasure.

the horological brothers

Up chevron