Agelocer builds round watches, mostly. The Codex series is the exception: three square-cased pieces that run from a $99 quartz dress watch to a $239 automatic, sitting in a catalogue where almost everything else is a circle. This Agelocer Codex review is built entirely from the spec fields on the PrimeTimepiece product pages — which matters more on this series than on any other model the brand makes, for a reason we'll get to.
Verdict: the Codex Square Quartz Women's, $99, is the one worth your attention — a 6.2mm-thin, 37g square with a synthetic sapphire crystal, and the cheapest sapphire-crystal watch in the whole catalogue.
Best mechanical Codex: the Codex Square Automatic, $239 — Cal. A3350, 40-hour reserve, 34.5 × 35mm, and a 22mm strap you'll probably want to change.
Best for people who stare at movements: the Codex Double Skeleton, $239 — open-worked front and back, with the thinnest spec sheet of the three.
Is the Agelocer Codex worth buying?
Yes, for the case shape and the entry price. The Codex is a square-cased series running $99 to $239, from a quartz dress watch to two automatics — a shape the affordable market barely offers. What you accept in return is a leather strap you'll want to upgrade and a 50m rating that means splashes, not swimming.
The three Codex watches, side by side
Every figure below comes from the specification field on the product page it sits in. Where the page doesn't state something, the cell says not stated — we haven't filled it in from a brand site, a marketplace listing or a photograph.
| Codex Square Quartz Women's | Codex Square Automatic Men's | Codex Double Skeleton Men's | |
|---|---|---|---|
| Price | $99.00 | $239.00 | $239.00 |
| Movement | Cal. A1850, brand-stated Swiss quartz | Cal. A3350 automatic, 21,600 vph, 40h reserve | "Automatic mechanical" — calibre not stated |
| Case | 316L steel, 30 × 26mm | 316L steel, 34.5 × 35mm | Stainless steel, square — size not stated |
| Thickness | 6.2mm | 10mm | Not stated |
| Weight | 37g | 63.5g | Not stated |
| Crystal | Synthetic sapphire | Not stated | Not stated |
| Water resistance | 50m | 50m (5 ATM) | Not stated |
| Strap | Italian embossed calfskin, 18mm | Cowhide leather, 22mm | Leather — width not stated |
| Buckle | 316L pin buckle | Pin buckle | Folding buckle |
| Colourways | Roman Scale Silver | Classic Silver, White-Faced Brown II | Classic Silver, Classic Black |
Codex Square Quartz Women's — $99
The $99 Codex on the wrist — 30 × 26mm, 6.2mm thick, 37g.
This is the interesting one, and not because it's the cheapest. The spec field reads watch mirror: synthetic sapphire crystal glass — making it the least expensive sapphire-crystal watch we sell, on a feature usually cut first at this end of the market. The rest is coherent with that: 316L steel, 30 × 26mm, 6.2mm thick, 37g on Italian embossed calfskin, 50m, etched embossed caseback. The movement is a Cal. A1850 that Agelocer describes as Swiss quartz — a claim about where a component comes from, not a Swiss Made watch. Those two get confused constantly, and only one of them is on the page.
The listing states luminous hands; the pigment grade is not specified. The one real limitation is the strap: 18mm, and slim leather at this price is a consumable.
Verdict: the best-value entry to sapphire in the store, and a genuinely elegant dress square. See the Codex Square Quartz Women's →
Codex Square Automatic Men's — $239
The $239 Codex Square Automatic, Classic Silver — small seconds and a date aperture at six.
The mechanical version of the same idea, and the fullest spec sheet of the three: automatic Cal. A3350 at 21,600 vph with a 40-hour reserve, a 34.5 × 35mm cushion-square case in 316L steel, 10mm thick, 63.5g on cowhide leather, 22mm strap, pin buckle, 50m (5 ATM). The A-series calibre numbering is Agelocer's own and the brand describes these movements as in-house; no independent teardown confirms what is made where, so read that as a brand statement.
Product photography shows a small-seconds register with a date aperture inside it at six — a busier dial than the quartz, and a properly vintage layout. The crystal material is not stated on this page. If sapphire is why you're buying, buy the $99.
The second colourway, White-Faced Brown II — same case, warmer finish.
Verdict: the pick if you want the shape with a mechanical movement inside it. See the Codex Square Automatic →
Codex Double Skeleton Men's — $239
The Codex Double Skeleton, Classic Silver — open-worked front and back.
Same square footprint, opposite personality: a fully open-worked dial showing the gear train, bridges and balance from both sides, in a steel case on leather with a folding buckle. The listing calls it an automatic mechanical movement and stops there — no calibre, no reserve, no case size, no thickness, no weight, no crystal, no water resistance.
One vocabulary note, because the terms get swapped around: open-worked means material cut away across the dial and movement so you see the mechanism, while a true open heart is a single aperture over the balance in an otherwise solid dial. This is the former. The longer version of that distinction lives in our guide to open-heart and open-worked dials.
Verdict: buy it for the view, and go in knowing the spec sheet is short. See the Codex Double Skeleton →
Why a square case wears bigger than the number suggests
A 34.5mm round watch and a 34.5mm square watch are not the same watch. A circle's widest point is its only widest point; a square has corners, and those corners reach further across your wrist and further down towards it. So judge a square by its lug-to-lug reach and its diagonal, not the headline width, and expect it to read a size larger than the number implies. Our watch sizing guide covers the measurement that actually decides fit.
The other square-case variable is cuff clearance, and it's where the $99 quietly wins: 6.2mm disappears under a shirt sleeve instead of catching on it. The 10mm Square Automatic is still slim, but you'll feel it on a fitted cuff.
What's the cheapest watch with sapphire crystal?
In our catalogue, the $99 Codex Square Quartz Women's — its spec field states synthetic sapphire, and nothing else we sell states sapphire at a lower price. All watch sapphire is lab-grown, so "synthetic" on a spec sheet is normal rather than a downgrade. The full trade-off against mineral glass is in our sapphire versus mineral crystal comparison.
What sapphire actually buys you: it resists scratches far better than mineral glass, but chips more readily on a hard corner strike and costs more to replace. One buying guardrail while you're shopping the tier: "sapphire", "crystal glass" and "sapphire-coated" are three different things, and only the first is sapphire. If a listing doesn't name the material, treat it as unstated — including on the other two Codex models above.
Quartz or automatic in this series?
Short version: the quartz keeps better time and asks nothing of you; the automatics give you something to look at. Quartz wants a battery every few years and a service almost never. A mechanical drifts by seconds a day, stops if you leave it off the wrist past its reserve, and eventually wants a workshop. Neither is better — they fail differently. Settle it with our automatic versus quartz breakdown, and the running-cost side in Agelocer warranty and servicing.
Where these specs come from, and why some cells say "not stated"
Here's the reason this review keeps flagging blanks. Search the Codex name and you will find square Agelocers described elsewhere with a different calibre number, a different case size and a hand-wound movement — while the watch on our page is listed as an automatic running Cal. A3350. Those may be different references, or one set of copy may simply be old. We don't know, so we don't print it.
What we print is what the listing we sell from states; where it states nothing, we say so. That costs us a tidier table and it's worth it, because the specs people get burned by are exactly the ones copied in from somewhere plausible. A water-resistance figure borrowed from a similar-looking reference is how a watch ends up in a swimming pool; a crystal claim borrowed the same way is how someone pays for sapphire and gets mineral. If you want a number we haven't printed — the Double Skeleton's case size, say — ask us and we'll find out rather than guess in public. The same rule governs origin, which is covered properly in where Agelocer watches are made.
Living with a Codex
Three expectations to set. First, water: 50m is stated on the $99 and the $239 automatic, and it means rain, hand-washing and a spilled drink — not laps and not the sea. We wrote a whole post on what a 50m rating actually permits because that number misleads more buyers than any other spec.
Second, the strap. It's the standing criticism of this brand and it holds here: budget $30–60 for a replacement and these punch noticeably harder. Know your lug width first — 18mm on the $99, 22mm on the Square Automatic, unstated on the Double Skeleton — and our guide to measuring lug width and swapping a strap covers doing it without gouging the case.
Third, the honest gap: no independent long-term data exists on any of these. No teardowns, no measured rate reports, essentially no forum history — true of the brand generally, and why we label brand claims as brand claims. The wider assessment is in our Agelocer brand review. Agelocer states a two-year international warranty and a 30-day return window.
Who each Codex is for
You want your first sapphire-crystal watch and you're spending under $150. Take the $99 and put the change towards a better strap. Nothing else in the store gets you a stated sapphire crystal for less. Shop it here, or browse the rest of the ladies' collection.
You're tired of round watches. The Codex Square Automatic is the mechanical answer at $239 — a genuine cushion-square with a 40-hour reserve, in a segment where the shape is usually reserved for quartz fashion pieces.
You buy watches to watch them run. The Codex Double Skeleton at $239, with the caveat about its short spec sheet stated plainly. If open dials are the draw more than the square shape, the round Schwarzwald range starts lower and states more.
Agelocer Codex review FAQ
Is the Agelocer Codex automatic or quartz?
Both exist — it depends on the reference. The $99 Square Quartz Women's runs a Cal. A1850 quartz. The $239 Square Automatic is listed with an automatic Cal. A3350. The $239 Double Skeleton is listed as automatic mechanical with no calibre named. Check the movement field on the specific listing before buying.
What is the cheapest watch with a sapphire crystal?
In our range, the $99 Codex Square Quartz Women's, whose spec sheet states synthetic sapphire crystal glass. Sapphire is usually the first feature dropped below about $150, so a stated sapphire at $99 is unusual. Read the crystal field, not the marketing copy: "crystal glass" and "sapphire-coated" are different things.
How does a 30 × 26mm square watch wear?
Flatter and wider across the wrist than a round watch of similar footprint, and slightly larger than the numbers suggest, because a square's corners reach further. At 6.2mm and 37g it slips under a cuff without a fight, which is the whole point of a dress square. Check lug-to-lug before diameter.
Can you swim with an Agelocer Codex?
No. The two models that state a rating are 50m, which covers rain, splashes and hand-washing, but not swimming, showering or diving. The Double Skeleton states no rating at all, so treat it as the least water-resistant of the three until the listing says otherwise.
The rest of the range
The Codex is the square corner of a catalogue that also runs moonphases, skeletons and tourbillons — browse the full Agelocer collection to see where the square sits against everything else.





