Lucky Harvey's catalog runs from a 39mm titanium case just 9.8mm thick to a 43mm steel case 17.5mm thick — a wider spread than most listings for this brand let on. Plenty of listings repeat one "43mm / 13mm" spec across different models, but the catalog figures show the 43mm cases alone run from 11mm to 17.5mm thick. Here's the real Lucky Harvey watch size for eight models we stock, taken from each model's own listing and matched to wrist size.
Verdict: if your wrist is 6.5 inches or smaller, stick to the 39mm or 40mm models below. If it's 7 inches or bigger, the 43mm cases wear fine — just know that two of them run well over 16mm thick.
Thinnest published figure / best for a small wrist: ZLS502-1 Horse, 39mm × 9.8mm, $2,399.99.
Best everyday 40mm: ZLS402-1 Sound of Nature, 40mm × 11.95mm, $1,499.99.
Slimmest 43mm: ZLS303-2 Roulette, 43mm × 11mm, $1,199.99.
Skip it if your wrist is under 7 inches and you had your eye on the ZLS304-2 Sic Bo at 17.5mm thick — go thinner instead and read on for why.
What are the exact diameter and thickness figures for every Lucky Harvey watch here?
Lucky Harvey cases in our data run from 39mm to 43mm wide and 9.8mm to 17.5mm thick. The slimmest published figure is the 39mm ZLS502-1 at 9.8mm; the thickest is the 43mm ZLS304-2 Sic Bo at 17.5mm. Most 40mm chiming models sit between 10.95mm and 11.95mm, and 43mm automatons here run from 11mm to 17.5mm.
| Model | Diameter | Thickness | Case material | Water resistance | Price |
|---|---|---|---|---|---|
| ZLS502-1 Horse | 39mm | 9.8mm | Grade 5 titanium | 5 ATM | $2,399.99 |
| ZLS504-1 Genghis Khan | 39mm | not stated | Grade 5 titanium | 5 ATM | $2,199.99 |
| ZLS413-2 Meteorite | 40mm | 10.95mm | Grade 5 titanium | 5 ATM | $2,399.99 |
| ZLS402-1 Sound of Nature | 40mm | 11.95mm | 316L stainless steel | 5 ATM | $1,499.99 |
| ZLS303-2 Roulette | 43mm | 11mm | 316 stainless steel | 3 ATM | $1,199.99 |
| ZLS202-1 Dragon | 43mm | 13mm | 316 stainless steel | 5 ATM listed (see note) | $1,899.99 |
| ZLS204-2 Skull | 43mm | 16.5mm | 316 stainless steel | 3 ATM | $1,899.99 |
| ZLS304-2 Sic Bo | 43mm | 17.5mm | 316L stainless steel | 3 ATM | $1,199.99 |
Our listing for the ZLS504-1 Genghis Khan gives diameter, case material and water resistance but not a thickness figure, so that cell reads "not stated" rather than a guess. ATM is the standard unit for water-resistance ratings — short for atmospheres, roughly the pressure at 10 metres of depth — and it's an industry-wide term, not specific to this brand. We've taken the rating for each model from its own current listing above; if you've seen a different figure for the same model elsewhere, plan around the lower of the two ratings.
Water-resistance figures for this brand are often muddled online. The same casino watch can appear at 3 ATM on one page and 5 ATM on another. Even our catalog has one outlier: the ZLS202-1 Dragon listing says 5 ATM, while the other 43mm steel automaton and casino models in our data are rated 3 ATM. To be safe, treat the Dragon as a 3 ATM watch and keep all the 43mm automatons away from water beyond splashes and rain.
How big are Lucky Harvey watches, really?
Diameter alone undersells the range: cases span 39mm to 43mm, but thickness swings far more, from 9.8mm to 17.5mm. A 39mm titanium chimer wears closer to a dress watch than a 43mm steel automaton at 16.5mm or 17.5mm, even though the diameter gap between them is only 4mm.
That's why we're leading with thickness rather than diameter. If you've never measured your own wrist for a watch before, our general guide to choosing a watch size that fits your wrist covers how to do it with a tape measure or a strip of paper, before you narrow it down to a specific Lucky Harvey model.
One more number worth knowing is lug-to-lug: the distance from the tip of the top lugs to the tip of the bottom lugs, which decides whether a case overhangs the edges of your wrist. Our listings don't publish it for any of these models, so on a smaller wrist, diameter and thickness are the best guide available, and another reason to lean toward the 39mm and 40mm cases.
What is the thinnest Lucky Harvey watch?
The thinnest published figure belongs to the ZLS502-1 Horse at 39mm and 9.8mm — a titanium chiming automaton. The next thinnest is the ZLS413-2 Meteorite at 40mm and 10.95mm. Both are titanium; the thinnest steel model in our data is the 43mm ZLS303-2 Roulette at 11mm.
The ZLS504-1 Genghis Khan also has a 39mm Grade 5 titanium case and a 5 ATM rating, like the ZLS502-1, though our listing doesn't state a thickness for it, so we can't say where exactly it lands next to its 9.8mm sibling.
One caveat on that 9.8mm: the ZLS502-1 listing notes the figure doesn't include the crystal, so the full height on the wrist is slightly more. It's still the slimmest figure in the range, but the real gap to the ZLS413-2's 10.95mm may be smaller than the numbers suggest.
The ZLS502-1 Horse, $2,399.99 — 39mm × 9.8mm, Grade 5 titanium, 5 ATM.
ZLS402-1 or ZLS413-2 — which 40mm chiming Lucky Harvey should you buy?
Both are 40mm and share a 5 ATM rating, but they're not the same thickness or material. The ZLS402-1 is 316L stainless steel at 11.95mm; the ZLS413-2 is Grade 5 titanium at 10.95mm — a millimeter thinner and, since titanium is lighter than steel, likely the lighter of the two (our listings don't publish weights).
The decision usually comes down to dial, not size. The ZLS402-1 has a hand-hammered ocean blue dial with a big date window, and costs $1,499.99. The ZLS413-2's dial is cut from genuine Muonionalusta meteorite, acid-etched to show the Widmanstätten pattern, limited to 50 pieces, and costs $2,399.99 — a premium for a dial where, per Lucky Harvey, no two are identical.
The ZLS402-1 Sound of Nature, $1,499.99 — 40mm × 11.95mm, 316L stainless steel, 5 ATM.
Why are some 43mm Lucky Harvey automatons so much thicker than others?
Lucky Harvey hasn't published an engineering reason, so treat any explanation, including ours, as informed guesswork. Even the slimmest, the 11mm ZLS303-2 Roulette, has a moving part: per Lucky Harvey, an 18k gold bead spins across its roulette betting area. The two thickest carry more: the 16.5mm ZLS204-2 Skull moves its silver jaw and eyes, and the 17.5mm ZLS304-2 Sic Bo houses three 925 silver dice.
The ZLS202-1 Dragon, at 13mm, sits between those extremes. Per Lucky Harvey, its 999 pure gold bead is revealed and slowly retracted at the hour. We go deeper on this model in our Lucky Harvey Dragon review.
The ZLS303-2 Roulette, $1,199.99 — the slimmest 43mm case in our data, at 11mm.
The ZLS202-1 Dragon, $1,899.99 — 43mm × 13mm, 316 stainless steel; listed at 5 ATM, but treat it as 3 ATM like the other 43mm automatons.
How thick is the Lucky Harvey Sic Bo, and who should skip it?
The Sic Bo (ZLS304-2) is 43mm wide and 17.5mm thick, the thickest case in our data — 316L stainless steel, 3 ATM, $1,199.99. Skip it if you have a small wrist or want a watch that sits flat under a cuff; a case this tall will sit noticeably high and may catch on a sleeve.
The trade-off is the dice mechanism: per Lucky Harvey, the watch houses three dice made of 925 pure silver, part of the Sic Bo gameplay the model is built around. If that's the appeal, the thickness is the price of admission. For other dice, roulette and poker dials in the catalog, see our casino watches roundup.
The ZLS304-2 Sic Bo, $1,199.99 — 43mm × 17.5mm, the thickest case in our data.
Which Lucky Harvey fits a 6.5-inch wrist, and which suits a 7.5-inch wrist?
A 6.5-inch wrist suits the thinner, smaller-diameter cases: the 39mm ZLS502-1 or ZLS504-1, or the 40mm ZLS413-2 or ZLS402-1. A 7.5-inch wrist can carry any 43mm model here, including the thicker ZLS204-2 Skull and ZLS304-2 Sic Bo, without either looking out of proportion.
In between, at roughly 6.75 to 7 inches, the 43mm ZLS303-2 Roulette or ZLS202-1 Dragon are the more forgiving 43mm picks — at 11mm and 13mm, both 3.5mm or more slimmer than the Skull (16.5mm) and Sic Bo (17.5mm), so they sit much lower on a mid-sized wrist. For the general method behind matching wrist size to case diameter rather than going by a single number, see our watch size fit guide.
Will a 43mm Lucky Harvey fit under a shirt cuff?
It depends more on thickness than diameter. The 11mm ZLS303-2 or 13mm ZLS202-1 slide under most cuffs without much resistance. The 16.5mm ZLS204-2 and 17.5mm ZLS304-2 are tall enough that they can push against a fitted cuff — try one on before committing to French cuffs or a slim dress shirt.
The same logic applies to the 40mm chiming models: at 11.95mm the ZLS402-1 is closer to a normal dress-watch thickness than either of the two chunkiest 43mm cases, despite being a smaller watch overall in diameter.
Does titanium feel different from steel at the same size?
Yes, mainly in weight. Titanium is lighter than stainless steel for the same volume, so the Grade 5 titanium ZLS413-2 should feel lighter than the 316L steel ZLS402-1 at the same 40mm diameter. It's also 1mm thinner (10.95mm vs 11.95mm), so it sits a little lower too. Our listings don't publish weights; for the general difference between the two metals, see our titanium vs stainless steel comparison.
The same applies across the 39mm Horse and Genghis Khan models, both cased in Grade 5 titanium, versus the 43mm automatons, which are all 316 or 316L stainless steel. So the gap in wrist-feel between a 39mm titanium model and a 43mm steel automaton is likely bigger than the 4mm diameter difference alone suggests.
Our picks by wrist size, and how to order the right one
Under 6.5 inches, start with the 39mm titanium ZLS502-1 Horse or ZLS504-1 Genghis Khan, or the 40mm ZLS413-2 Meteorite. The Horse (9.8mm) and Meteorite (10.95mm) carry the two thinnest published figures we list; the Genghis Khan matches the Horse's 39mm diameter and Grade 5 titanium, though its thickness isn't published. At 6.5 inches, the 40mm ZLS402-1 is the safe everyday choice; from roughly 6.75 to 7 inches, the 11mm ZLS303-2 Roulette or 13mm ZLS202-1 Dragon are the most forgiving 43mm cases. Over 7 inches, any 43mm model here works, including the 16.5mm ZLS204-2 Skull and 17.5mm ZLS304-2 Sic Bo.
All eight models above are in stock at PrimeTimepiece, with worldwide shipping and buyer protection on every order. For the rest of the brand's range beyond these eight, see our full Lucky Harvey brand guide, or browse the current in-stock range directly in the Lucky Harvey collection.