Armin Strom has never treated complications as decorative afterthoughts, and the Orbit Midnight Purple makes that point with unusual clarity.
Instead of hiding the date in a small aperture or letting it crowd the dial, the independent Swiss manufacture moves the display onto the bezel and lets the wearer summon it on demand.
The result is a sports watch with real mechanical personality, now dressed in a rich purple treatment that reaches deeper than the dial.

At a glance
- Armin Strom’s Orbit Midnight Purple is a 20-piece edition of its sports watch with an on-demand bezel date.
- A pusher at 10 o’clock sends the central date hand to the correct date on the engraved ceramic bezel, then returns it to noon when disengaged.
- The 43.4mm stainless steel watch uses the in-house automatic calibre ASS20 and is priced at CHF 36,000.
A date indication that disappears until needed
The Orbit was created around a deceptively simple problem.
Armin Strom’s off-centred time display and exposed dial-side mechanics leave little room for a conventional date window, and forcing one into the layout would interrupt the architecture that gives the watch its character.
The answer was to move the date to the bezel, but the execution is more involved than a standard pointer date.

When the date is disengaged, the large openworked central hand rests at 12 o’clock, aligned with the purple “Date” inscription on the fixed black ceramic bezel.
Press the pusher at 10 o’clock and the hand jumps instantly to the correct date on the engraved 1 to 31 scale.
A second press sends it flying back in a retrograde motion to its resting position, clearing the dial-side display while a mechanical memory wheel continues to track the calendar in the background.

That sense of interaction is the point.
The date is no longer passive information, but a small mechanical event that adds movement and intent to an everyday complication.
Midnight Purple moves across the architecture
Purple can easily become theatrical for the wrong reasons, but Armin Strom uses it here as a structural colour rather than a surface flourish.

The off-centred sub-dial carries a Midnight Purple fumé finish, brighter at the centre and deeper toward the edge.
For this edition, the colour also extends to the frosted mainplate, giving the exposed movement side a stronger visual link to the time display.
Even the perlage beneath the off-centred dial is picked out in purple, which helps draw the eye into the layered construction rather than leaving the colour isolated on top.

The shade itself has a house connection, taking inspiration from a refined purple tone developed by Armin Strom, the master watchmaker whose name still defines the brand’s identity.
It’s a clever fit for a watch that already has plenty happening on the dial.
The purple doesn’t hide the mechanics, but it frames them and makes the column wheel, micro-rotor, equal-force barrel and openworked finger bridges feel more coherent as a composition.

A sport watch with visible mechanics
The Orbit Midnight Purple uses a 43.4mm stainless steel case with a 12.6mm thickness and a 44.35mm lug-to-lug measurement, giving it a compact stance relative to its diameter.
Vertical brushing and polished bevels keep the case in the contemporary sports-watch lane, while the angular crown guards add some visual muscle.
The crown is not screw-down, and water resistance is rated to 50 metres, so this is more an assertive everyday mechanical watch than a true aquatic instrument.

The fixed black high-tech ceramic bezel is engraved with the full date scale, turning what is usually a peripheral component into one of the watch’s defining functional elements.
Legibility after dark gets special attention.
The hour and minute hands, made in-house, are treated with Super-LumiNova, as are the applied indices, while the 12 and 6 numerals are crafted from solid Super-LumiNova blocks for a pronounced three-dimensional glow.

The integrated steel bracelet uses a three-row H-link design with a double-folding clasp.
It can be exchanged for a strap, though the switch requires tools rather than a quick-release system.
The ASS20 movement keeps the show running
The Orbit’s in-house calibre ASS20 is derived from Armin Strom’s Gravity Equal Force architecture and is inverted to put much of the mechanical action on display.

Its patented equal-force barrel is designed to deliver steadier energy to the regulating organ and provides a 72-hour power reserve.
The date system adds a column wheel and mechanical memory wheel, bringing the same sense of crisp control more commonly associated with chronographs to a calendar function.
On the back, a broad bridge is finished with Côtes de Genève and opened to reveal the 3.5Hz balance, escapement and visible gear train.

The finishing remains very much in Armin Strom territory, with hand-frosted surfaces, mirror-polished bevels, straight and circular graining, and perlage appearing across the exposed components.
What makes the Orbit compelling isn’t simply that the date is unusual.
It’s that the complication changes the watch’s daily rhythm, giving the wearer a reason to engage with the mechanism rather than merely glance at it.

Details & Specifications
| Brand | Armin Strom |
|---|---|
| Model | Orbit Midnight Purple |
| Case size | 43.4mm diameter, 12.6mm thickness, 44.35mm lug-to-lug |
| Case material | Stainless steel with brushed surfaces and polished bevels |
| Bezel | Fixed black ceramic bezel with engraved 1 to 31 date scale and purple “Date” inscription |
| Crystal | Sapphire crystal front and sapphire caseback with anti-reflective treatment |
| Dial | Midnight Purple fumé off-centred time display with matching purple frosted PVD-coated mainplate |
| Movement | In-house automatic calibre ASS20 |
| Complication | On-demand date display with column wheel and mechanical memory wheel |
| Frequency | 3.5Hz |
| Power reserve | 72 hours |
| Water resistance | 50 metres |
| Bracelet | Integrated stainless steel three-row H-link bracelet with double-folding clasp |
| Production | Limited to 20 pieces worldwide |
| Price | CHF 36,000 |
The Orbit Midnight Purple is aimed at collectors who want an independent sports watch with visible engineering and a complication that actually changes the wearing experience.
It’s not a restrained watch, but its confidence comes from mechanics first, colour second, and that balance is exactly where Armin Strom tends to be at its best.





