A closer look at the AJ-003 technical specifications
To really know your AJ-003, a clear set of specifications helps. Here are all the AJ-003 technical details in one place, whether you need them to compare with other models, fill in an insurance declaration, or answer the questions of a curious fellow enthusiast.
The case
The case measures 39mm in diameter, with a total thickness of 11.5mm, or 9.45mm without the domed crystal. The lug-to-lug length is 45.55mm, and the lug width is 19mm. It's machined from 316L steel, with a brushed and satin-finished surface on the asymmetric lugs and a polished fixed bezel. The semi-integrated crown carries the engraved AJ logo.
Crystals and water resistance
On the front, a domed sapphire crystal with anti-reflective treatment. At the back, a screwed and polished caseback fitted with a mineral crystal that lets the movement show through. Water resistance is rated at 5 ATM (50 metres), suited to everyday use, though not designed for diving. Our guide to wearing the watch at the beach explains what that means in practice.
The dial
The dial is aluminium, cut from the bonnet of a 1962 Jaguar Type E Semi-Lightweight Series 1 3.8L. It's vertically brushed, with a railway-track minute track inspired by period Smiths instruments, and mirror-polished luminescent hands. For the story behind this material and what makes each dial unique, see our materials guide.
The movement
The calibre is a Sellita SW300-1B, automatic, COSC certified. It beats at 28,800 vibrations per hour (4 Hz) with a power reserve of around 56 hours. Functions are limited to hours, minutes, and seconds, with a hacking seconds function and no date complication. The rotor is skeletonised and bevelled, with Côtes de Genève finishing and a 3N gold galvanic treatment. For a full explanation of how this calibre works, see our dedicated guide to the movement.
The strap
The watch comes with a leather strap, hand-finished by French artisans.
Price, edition, and warranty
The AJ-003 is priced at 2,400 euros for the AJ-003-B reference, in a limited edition of 200 pieces per reference. Every purchase comes with a 2-year warranty, a 15-day right of return, and delivery in 2 to 3 working days. Our warranty guide for the Type E collection explains what is covered.
How to read these figures
Technical figures only tell part of the story: the 39mm diameter or the 56-hour power reserve mean more once you're wearing the watch every day than they do on paper. For anyone less familiar with watch terminology, a few useful reference points: ATM measures water resistance, vph is the number of movement vibrations per hour, and COSC is the Swiss body that certifies the accuracy of select calibres.
These specifications outline the use profile the watch was designed for: sustained daily wear, dressed-up occasions, the occasional trip, but not intensive sport or diving. Keeping that profile in mind helps make sense of each figure in context, rather than comparing it in isolation to a watch built for a completely different purpose.
Summary
In brief : a compact 316L steel case, an authentic aluminium dial from a real competition car, a COSC-certified Swiss movement, and water resistance suited to daily use.
Frequently asked questions
Does the AJ-003 have a date function?
No. The Sellita SW300-1B fitted to the AJ-003 displays hours, minutes, and seconds only, with a hacking seconds function. The absence of a date is a deliberate choice: it preserves the clean legibility of the dial and its direct reference to the instrument panels of the 1962 Jaguar Type E.
What is the difference between the sapphire and mineral crystals on the AJ-003?
The AJ-003 uses both: a domed sapphire crystal with anti-reflective treatment on the front, which handles everyday scratches, and a mineral crystal at the back, which closes the caseback and lets the movement show through. Sapphire is the most scratch-resistant crystal material available in watchmaking.