1RSU - No 1 Remote Sensor Unit

1RSU - No 1 Remote Sensor Unit

$909.60

An exclusive timepiece designed for and inspired by the mission and people of No. 1 Remote Sensor Unit, Royal Australian Air Force — the unit that watches beyond the horizon.

Operating the Jindalee Operational Radar Network from RAAF Base Edinburgh, 1RSU sees further than almost any unit in the Air Force. This watch carries that mission on the wrist: refined and understated up close, unmistakable to anyone who knows what they're looking at.

Every detail reflects the unit's identity and technology:

  • Black stealth dial with the JORN signal worked into the surface as a textured relief — the radar signal made physical.
  • Yellow "No.1" accent and the motto "Nowhere to Hide" set subtly into the dial.
  • 24-hour ceramic bezel paired with the true GMT hand — Zulu time at a glance.
  • Dipole-antenna seconds hand — modelled after the elements of the JORN array, sweeping across the dial.
  • JORN array printed inside the sapphire caseback, with the 1RSU patch laser-engraved into the rotor.

A genuine tool watch: 40mm 316L steel case, sapphire crystal, Swiss Super-LumiNova, and 200m water resistance. At its heart, the automatic Miyota 9075 GMT movement — a true GMT calibre at 28,800 vph, built for reliability and Zulu-time precision.

Yours alone.
Each watch is individually numbered and can be engraved with your personal text (up to 14 characters).
Please add your engraving request in the “Notes” field at checkout.

Pre-orders open: June 22, 2026
Pre-orders close: July 06, 2026

When the order window closes, we produce exactly the number of watches ordered — no surplus, no reruns.
Production takes approximately 14–16 weeks, after which your timepiece will be shipped directly to your doorstep.

The caseback & Crown

A view into the movement
Turn the watch over and a sapphire display caseback opens onto the Miyota 9075 GMT, fully visible and in motion. The engraved ring frames it with each watch's official details: 1RSU, the Miyota 9075 calibre, automatic, 200 m, your serial — No. XX / XX — and your personal engraving.

Two layers, one story
Printed on the inside of the sapphire is the JORN transmit array. Behind it, the 1RSU patch is laser-engraved into the rotor, sweeping across the movement as the watch winds itself: the unit's identity, quite literally, always in motion.

The crown — the radar footprint
The screw-down crown is engraved with the JORN radar footprint — concentric arcs fanning out from a single point, the shape of the coverage 1RSU watches every day.

The movement

Inside is the Miyota 9075, a self-winding automatic from Miyota's premium series and one of the few true GMT movements at this level — 28,800 vph, 24 jewels, 42-hour power reserve, with hacking and hand-winding.

How the GMT works

The watch shows two zones at once: the standard hands tell local time, while a central 24-hour hand reads your Zulu/UTC reference against the ZULU TIME bezel — day or night, no AM/PM ambiguity.

Because it's a true (flyer) GMT, the local hour hand jumps independently in one-hour steps. In practice: set the 24-hour hand to Zulu once and leave it there — when you change location, just jump the local hand to wherever you are, and Zulu stays locked.

Automatic — it winds itself

The movement winds from the motion of your wrist, via the rotor turning behind the caseback. Wear it daily and it keeps running on its own; leave it off and it holds charge for around 42 hours. No battery, ever.

FAQ

Current and former members of 1RSU — and the contractors, engineers and scientists who've been part of the JORN story over the decades. The design leans into the technology and history of the system, with the unit present but understated, so it resonates beyond serving members alone. The page isn't listed on our store; it's shared by direct link within the unit and to past members.

At its heart is the Miyota 9075 — a proven, Japanese-made automatic from Miyota's premium series. The true GMT function comes from its independent 24-hour hand, giving you a genuine second-zone (Zulu) readout — not cosmetic, but the point of the watch. The bezel is a 120-click unidirectional ceramic insert carrying the 24-hour Zulu scale; it indexes to every hour and can mark a third reference, turning one direction only rather than bidirectionally.

At its heart is the Miyota 9075 — a proven, Japanese-made automatic from Miyota's premium series. The true GMT function comes from its independent 24-hour hand, giving you a genuine second-zone (Zulu) readout — not cosmetic, but the point of the watch. The bezel is a 120-click unidirectional ceramic insert carrying the 24-hour scale; it indexes to every hour and can mark a third reference, turning one direction only rather than bidirectionally.

In a standard (whole-hour) time zone: set the 24-hour hand to Zulu once and leave it there. It reads Zulu directly against the bezel, day or night. When you change location, simply jump the local hour hand in one-hour steps — Zulu stays locked.

In a half-hour time zone (e.g. South Australia, UTC+9:30): the watch shares one minute hand between local time and Zulu, so with a half-hour offset the minutes can only be exact for one of the two zones — the other will read 30 minutes off. The simplest approach is to set your local time exactly, then read the Zulu hour off the 24-hour hand, with Zulu minutes = your local minutes minus 30. If you'd rather have Zulu spot-on instead, set the 24-hour hand to Zulu exactly and accept that local time reads about half an hour off.

How do I set it to Zulu time?
Because the 9075 is a true (flyer) GMT, you set Zulu once and leave it. (1) Pull the crown fully out (two clicks) — the seconds stop — and set the 24-hour hand and the minutes to Zulu/UTC, with the bezel in its home position (24 at 12) so the 24-hour hand reads Zulu directly. (2) Push the crown in one click and jump the local hour hand in one-hour steps to your local time; the 24-hour hand stays locked on Zulu, and the date flips as the hand passes midnight. (3) Push the crown back in and screw it down. From then on, only the local hand needs touching when you change location.
A note for those at Edinburgh: South Australia is UTC+9:30 and the hour hand jumps in whole hours only, so with Zulu set exactly, local time on the main dial sits about half an hour off — or set local time exactly and read Zulu as a half-hour offset on the 24-hour scale.

Yes — 200 m / 20 ATM with a screw-down crown. Swimming and diving are well within its rating. Two simple rules keep it watertight: always make sure the crown is fully screwed down before the watch goes near water, and never pull out or operate the crown when the watch is wet or in damp, humid conditions — only set the time when it's dry.

We accept: Visa, MasterCard, Visa Electron, Paypal and Apple Pay.

ALL FEES INCLUDED – Duties & VAT are built into our prices, so there’s nothing to pay upon arrival. Enjoy FREE shipping on orders over $69!

We use DHL Express for fast, doorstep delivery from our warehouse in Norway.

Since this is a custom order, the watch cannot be exchanged or returned. However, it can certainly be sent back for repair if any issues arise.

SWISS SUPER-LUMINOVA

The hands, hour markers, and bezel markers are all adorned with Swiss Super-Luminova for exceptional low-light legibility.

Illustrative image from another project, shown to demonstrate the lume effect. The 1RSU dial, hands and bezel differ.

THEY TALK ABOUT US

Between the sporty cases, dials inspired by cutting-edge scientific technology and great value, there’s a lot to fall in love with here.