The PINDU Space Series watch we stock is the PD6630, and the specs attached to that reference seem to change depending on which listing you read. Our own PINDU PD6630 Space Series listing sets them out in one place: 45mm case (its spec table lists a 46mm dial diameter), 16mm thick, sapphire crystal, automatic self-wind movement, 5 Bar water resistance, $319.99. This review works from those numbers only, addresses the "tourbillon" question head-on, and compares it honestly to PINDU's own P6676 Planet Series.
Verdict: the PINDU PD6630 is a genuine automatic with a sapphire crystal and a 3D astronaut dial — real specs, not marketing confusion. It is not a tourbillon, whatever else you've read.
Best for a dressier 3D dial: PD6630 Space Series, $319.99 — 45mm case, 16mm thick, sapphire crystal, leather strap.
Best lower-price alternative: P6676 Planet Series, $299.99 — Miyota 8215 automatic, 48mm, on silicone.
Skip it if you want a watch under 15mm thick, or one rated for anything beyond splashes and rain. Read on before you buy either.
The PINDU PD6630 Space Series, $319.99 — 45mm case, 16mm thick, sapphire crystal, automatic self-wind.
What Is the PINDU Space Series?
The PINDU Space Series is not a separate sub-brand — it's the series name on the PINDU PD6630, a watch built around a 3D astronaut dial. PINDU's listing describes it as a limited-edition automatic self-wind mechanical watch with a stainless steel case, sapphire crystal, and leather strap, sold in nine colorways.
The dial is the point of the whole watch: a three-dimensional astronaut and moon-lander scene, read against oversized Arabic numeral markers, rather than a flat printed graphic. PINDU lists the case as round stainless steel, the dial window as sapphire crystal, and the strap as leather with a leather deployment buckle, 22mm wide and 24cm long. The nine variants — Gold Black, Gold, Gold Green, Gold Brown, Silver Green, Silver, Silver Black, Silver Blue, and Blue Gold — are all listed at the same $319.99 under one spec sheet, so the choice comes down to colour and finish.
Macro detail of the PD6630's sculpted astronaut dial.
Is the PINDU Astronaut Watch Automatic?
Yes. PINDU's listing for the PD6630 states the movement plainly: automatic self-wind. It winds itself from wrist motion, with no battery involved. You may see this watch marketed elsewhere as a tourbillon — our own spec sheet lists no such complication, so we're not calling it one.
Is the PINDU Space Series a Real Tourbillon?
No — at least not according to PINDU's own PD6630 listing, which states automatic self-wind and nothing else. You can see a balance wheel through the dial, but the listing describes the movement only as automatic self-wind and never calls it a tourbillon, so we don't either. If you specifically want the tourbillon look, PINDU lists the PD6656 Double Tourbillon Skeleton with a brand-stated double-tourbillon movement.
That matters because "tourbillon" is a specific, visible complication — a rotating cage that carries the entire escapement — not a loose description of any watch with moving parts on show. The PD6630's own specs describe an automatic self-wind movement under a sapphire crystal, full stop. For contrast, PINDU lists the PD6656 ($329.99) as a double tourbillon with a hand-wind and automatic movement, sapphire crystal and genuine leather strap. That is a brand-stated spec, so judge it on its own listing.
How Much Does the PINDU PD6630 Cost?
The PINDU PD6630 Space Series costs $319.99 on PrimeTimepiece, the same price across all nine colorways — Gold Black, Gold, Gold Green, Gold Brown, Silver Green, Silver, Silver Black, Silver Blue, and Blue Gold. Your decision comes down to color, not cost.
There's no tiered pricing by finish and no separate "limited edition" upcharge despite the style tag — every variant sits at the same $319.99, in stock. The listing describes it as new with box and papers, and it ships worldwide with buyer protection through PrimeTimepiece.
How Big Is the PINDU Space Series Watch?
PINDU's listing puts the PD6630 at a 45mm stainless steel case (its spec table lists a 46mm dial diameter), 16mm thick, on a 22mm leather strap. That's a large, substantial watch — thicker than PINDU's own Planet Series at 15mm — and best suited to wrists around 7 inches or larger, where it sits proportionate rather than overhanging.
| Spec | PINDU PD6630 Space Series |
|---|---|
| Movement | Automatic self-wind |
| Case material / shape | Stainless steel, round |
| Case diameter / thickness | 45mm case (spec table: 46mm dial diameter) / 16mm |
| Crystal | Sapphire |
| Strap | Leather, 22mm, leather deployment buckle |
| Water resistance | 5 Bar — splash and rain resistant, per PINDU |
| Price | $319.99 |
A note on the numbers you may see elsewhere: some listings quote this reference at roughly 45.5mm or 3 ATM. Our listing gives a 45mm case in its title and description, a 46mm dial diameter in its spec table, and 5 Bar water resistance. The honest read on that thickness: 16mm is a real presence under a cuff, not a slim dress-watch stack. If you've only worn thin quartz watches before, expect a bigger jump than the case diameter alone suggests.
The PD6630 on the wrist — 45mm / 16mm thick, leather strap.
PINDU Space Series vs. Planet Series: Which Should You Buy?
Choose the PD6630 Space Series, $319.99, for sapphire crystal, a leather strap, and the astronaut dial. Choose the P6676 Planet Series, $299.99, for a Miyota 8215 movement, a larger 48mm case, and a silicone strap. Both are automatics; the practical differences are case size (45mm vs. 48mm), a listed sapphire crystal vs. an unspecified domed crystal, leather vs. silicone, and $20.
| Model | Movement | Size | Key feature | Price | Who it suits |
|---|---|---|---|---|---|
| PD6630 Space Series | Automatic self-wind | 45mm / 16mm | Sapphire crystal, 3D astronaut dial, leather strap | $319.99 | Buyers who want a dressier 3D dial watch |
| P6676 Planet Series | Miyota 8215 automatic | 48mm / 15mm | Domed crystal, planet-texture dial, silicone strap | $299.99 | Daily wearers who want a lower price and a sport strap |
The P6676 Planet Series uses a curved, domed crystal (PINDU doesn't list its material, so don't assume sapphire) over a blue planet-texture dial with luminous hands and applied markers, on a silicone strap that tapers from 20mm to 24mm with a pin buckle. PINDU rates it to 50m, described as suitable for everyday splashes and hand washing, and it ships in eight planet and earth colorways including Black/Blue Planet, Orange/Red Planet, and White/Gold Moon. Inside is a Miyota 8215, a workhorse Japanese automatic movement that PINDU lists as hand-windable as well as self-winding.
The PINDU P6676 Planet Series, $299.99 — 48mm, 15mm thick, Miyota 8215 automatic.
So which to buy: if sapphire crystal and a leather strap matter to you — or the astronaut theme is the one you actually want — the PD6630 is worth the extra $20. If you'd rather have a Japanese-branded movement name, a sportier silicone strap, and a slightly thinner case for less money, the P6676 is the better buy. Neither is "better" outright; they suit different wrists and different dress codes.
If it's the 3D dial format you're after rather than either specific theme, PINDU's PD6539 Earth Theme 3D Dragon Celestial Body Series, $314.99, swaps the astronaut for a 3D dragon sculpture suspended inside a transparent, hollow dial, under a curved crystal mirror. It's a different kind of statement piece — see our broader breakdown in Best Affordable 3D Dial Statement Watch: Pindu Celestial Watches for how it and other 3D-dial PINDUs compare.
The P6676 Planet Series on the wrist — a domed-crystal, silicone-strap alternative to the Space Series.
Who Should Buy the PINDU PD6630 — and Who Should Skip It?
Buy the PD6630 if you want a statement automatic with sapphire crystal, a 3D astronaut dial, and real wrist presence for $319.99. Skip it if you need a thin dress watch under 15mm, swim-rated water resistance, or an actual tourbillon complication — none of those describe this model.
What It Is:
- An automatic self-wind mechanical watch with no battery
- A 45mm stainless steel case, 16mm thick, with a sapphire crystal
- A sculpted, 3D astronaut dial on a moon-lander theme
- A leather-strap, dressier alternative to PINDU's silicone Planet Series
- Sold in nine colorways, all at the same $319.99
What It Isn't:
- A tourbillon — PINDU's own listing states automatic self-wind, not tourbillon
- A thin watch — at 16mm it wears noticeably thick on the wrist
- Rated for swimming — 5 Bar here is described as splash and rain resistant, not a dive spec
- The cheapest pick on this page — at $319.99 it costs $20 more than the P6676 Planet Series and $5 more than the PD6539
That positioning makes the PD6630 the pick for a buyer who wants a 3D dial under a listed sapphire crystal, on a leather strap with a deployment buckle. Judged against that brief — not against a tourbillon it never claimed to be — it delivers exactly what its own spec sheet promises. For more on where PINDU sits as a brand, see our broader look at whether PINDU watches are good and the full best PINDU watches roundup for 2026.
Both the PD6630 Space Series and the P6676 Planet Series are in stock now, with worldwide shipping and buyer protection on every order. Browse the rest of the lineup in the PINDU collection if neither space-themed dial is quite the one.