About us

The SUBDELTA story

SUBDELTA is founded from the passion to design and build exceptional tool watches which are very authentic, durable and with outstanding quality. 

It all started with the P1lot One. This stunning grade 5 titanium "lefty" pilot's watch with a manual-wound ETA / Unitas 6498-1 was made exclusively by and for members of Horlogeforum.nl, the largest Dutch watch forum. The watch was completely sold out in just one week. In May 2015, we handed the 52 watches over to their new owners at Teuge International Airport.

banner Pilot One

Modified Handwound movement of the P1lot one

P1lot One

P1lot one versions

P1lot one cases ready to finish


52 grade 5 titanium P1lot One cases, ready to be brushed manually by our watchmaker.

P1lot One , Start of subdelta watches

SUBDELTA Periscope 

Subdelta Periscope Singlehand Watch

Subdelta Periscope, a one-hand 24-hour automatic piece, forged from bead-blasted grade 5 titanium and housing a bespoke movement from Russia. The matte hardware and day / night dial totally fitted in the submarine theme. It was built around 25 enthusiasts around the globe, referred to as "Commanders". They all have their own personal number, which is engraved in the crown. This teutonic design is something completely off the beaten tracks.

SUBDELTA Ace and Blue Ace

Subdelta Ace

The 2017 project is called the "Ace", a rugged, 42mm, purpose-built tool-watch made out of grade 5 titanium and a sandwich dial providing maximum legibility day and night. The heavily modified and re-enginered Swiss Made hand-wound movement (ref. ETA 6497) with swan neck regulators.

Subdelta Blue Ace Lumeshot

 The latest edition of the SUBDELTA ace is a blue-faced, steel version of the Ace, called Blue Ace. : some with a polished crown and some with a beadblasted crown, both in titanium.

Our 2019 limited edition is the SUBDELTA Quattro . This 40mm toolwatch with a Swiss mechanical heart has a unique revolving seconds cap, among other fine details and specs. This one-pointer is modified by hand by our Dutch Watchmaker and can be worn with the crown on either side and thus on either wrist. The name "quattro". This can be achieved by swapping the strap halves: the dial has no north or south, so the watch can be turned around. 

This watch is now in production and ready to ship after a very successful introduction on Horlogeforum.nl where it almost was chosen as the Limited edition watch for Forummembers of Horlogeforum.nl. By just a few votes this model was second in the votes but SUBDELTA decided to make the watch anyway. Still as a limited edition but now for everyone available.

Subdelta Quattro

SUBDELTA continues to redefine all the rules that make a brand, in an attempt to build that perfect timepiece, true to its origins.

We are working very hard on a new line of Luxury tool Watches that will raise the bar even higher.

The new line will be directly recognizable as SUBDELTA but offer Techniques and materials not often seen.

Our mission to build the best, toughest and highest quality Tool Watches in the world. Stay tuned.....