The PINDU PD6631 Panda Series is a 46mm automatic watch that's easy to mis-describe if you're comparing listings: case and water-resistance numbers for this exact model vary depending on where you look. PrimeTimepiece's own catalog page for the PINDU PD6631 Panda Series Automatic NH35 Men's Watch states 46mm, 20mm thick, a Japanese NH35 automatic movement, sapphire crystal, a genuine leather strap, and 10ATM (100m) water resistance, for $299.99. Here's what that actually means on the wrist, and whether it's the right PINDU for you.
Verdict: the PD6631 Panda earns its $299.99 price with a genuine NH35 automatic, a sapphire crystal, and a 10ATM/100m water-resistance rating — but only if a 46mm, 20mm-thick case is the statement you actually want on your wrist.
Buy it for the dial and the water rating: PINDU PD6631 Panda Series, $299.99 — bold panda-style dial, sapphire crystal, leather strap.
Want it slimmer and cheaper: PINDU PD6510 Water Ghost, $107.99 — 40mm, 13.5mm thick, the same 100m rating, on a steel bracelet.
Want it bigger but thinner: PINDU P6676 Planet Series, $299.99 — 48mm case at 15mm thick, Miyota 8215 movement, domed planet dial — but rated 50m for everyday splashes and hand washing, not the Panda's 100m.
Skip the Panda if a slim case under a shirt cuff matters more to you than case size — go to the PD6510 instead.
What is the PINDU PD6631 Panda Series?
The PINDU PD6631 Panda Series is a 46mm stainless steel automatic watch powered by a Japanese NH35 movement, fitted with a sapphire crystal, a genuine leather strap, and a 10ATM (100m) water-resistance rating. It ships new with box and papers for $299.99, in eight in-stock colorways including Gold, Silver Black, and Blue Gold.
| Spec | PINDU PD6631 Panda Series |
|---|---|
| Movement | Japanese NH35 automatic self-wind |
| Case | 46mm stainless steel, 20mm thick |
| Crystal | Sapphire |
| Strap | Genuine leather, 22mm wide, 21cm length |
| Water resistance | 10ATM / 100m (swimming and water activities) |
| Price | $299.99 |
If you've seen this model listed elsewhere as 42.5mm, 18.5mm thick and 3ATM, those figures don't match this listing's written specification of 46mm, 20mm thick and 10ATM (100m) — and 3ATM versus 10ATM is the difference between splash-proof and swim-ready. The numbers in this review come from the written specification on the PD6631 Panda Series' PrimeTimepiece product page. To be fully transparent, two of that page's own feature graphics don't match it: one labels the case 45.5mm and another shows a 5ATM badge. We've used the written spec (46mm, 10ATM) throughout, but if water resistance decides your purchase, ask our support team to confirm before ordering — every order is covered by buyer protection.
What does the PD6631 panda dial actually look like?
The PD6631 Panda's dial is a sculpted 3D scene of panda figures and bamboo, not the black-and-white two-tone layout that "panda dial" usually means in watch circles. In the product photos, parts of the dial are also cut away to show the movement, and the dial carries a printed "Tourbillon" label. The listing specifies a Japanese NH35 automatic and does not describe a tourbillon mechanism, so treat that label as dial decoration, not a complication.
PD6631 Panda Series in Gold Black — 46mm stainless steel, sapphire crystal, $299.99.
Is the PINDU PD6631 Panda worth $299.99?
Yes — for buyers who want a genuine NH35 automatic with a sapphire crystal and a 100m water-resistance rating in a bold, panda-dial design. At $299.99 you get a mechanical movement and a 100m water rating — double the 50m of the same-priced P6676 Planet Series, but you are also committing to a 46mm, 20mm-thick case that will not suit every wrist.
Put another way: the P6676 Planet Series costs the same $299.99 and gives you a bigger 48mm case but a thinner 15mm profile and a Miyota 8215 movement instead of the NH35. The PD6510 Water Ghost costs $107.99 — less than half — and matches the Panda's 100m rating in a smaller, slimmer case. The Panda's premium over the Water Ghost buys you the panda dial styling and the leather strap, not a meaningfully different water rating.
What movement is in the PINDU PD6631?
The PD6631 Panda runs on a Japanese NH35 automatic self-winding movement, a widely used Japanese automatic calibre. It winds itself from the motion of your wrist rather than running on a battery, and on this model it sits under a sapphire crystal — the most scratch-resistant crystal type in common use, at around 9 on the Mohs hardness scale. For what the NH35 is and why it's so common in mechanical watches at this price, see our NH35 movement explainer.
That sapphire-over-NH35 combination is worth noting at this price: plenty of automatics in this range pair a decent movement with a softer mineral or Hardlex crystal that scratches more easily in daily use. Within this comparison, the PD6510 Water Ghost also uses sapphire, while the P6676 Planet Series' listing specifies a curved, domed crystal without naming its material.
Can you swim with the PINDU Panda watch?
Yes — PINDU rates the PD6631 Panda at 10ATM (100m), described in the listing as suitable for swimming and water activities, double the 50m rating of the same-priced P6676 Planet Series. It is not described as dive-rated, so treat it as a swimming watch rather than scuba equipment — and because the stock strap is genuine leather, which water damages, fit a non-leather strap before regular swims.
For a full, practical breakdown of what ATM and BAR ratings actually permit at each threshold — and why "water resistant" doesn't automatically mean "dive watch" — see our complete water resistance guide. It covers exactly this kind of spec, which matters more than most buyers realize until the watch is already wet.
PD6631 Panda in Blue Gold — listed at 10ATM / 100m; swap the leather strap before regular swims.
How thick is the PINDU PD6631, and how does a 46mm case wear?
The PD6631 Panda's case measures 46mm across and 20mm thick — noticeably thicker than the 13.5mm-thick PD6510 Water Ghost, a difference of about 6.5mm. Expect it to sit high on the wrist and possibly catch on a snug shirt cuff; it wears best on a wrist that likes a visible, substantial watch rather than a low-profile one.
As a general rule of thumb, a 46mm case tends to look oversized on wrists under about 17cm (6.7in) and sits more naturally from around 18cm (7in) up. The listing doesn't give a lug-to-lug length, so measure your wrist and compare against a watch you already own before ordering.
The leather strap is 22mm wide with a 21cm band length. If you want to change the look without buying a different watch, PINDU's own 22mm Quick Release Leather Replacement Strap ($24.99) is listed as a confirmed fit for the P6631, and comes in Black, Brown, Red, Green, or Blue — a cheap way to try a different color before committing to a different watch entirely.
PD6631 Panda in Silver Black on the wrist — 46mm wide, 20mm thick.
PINDU's 22mm Quick Release Leather Replacement Strap, $24.99 — a confirmed fit for the P6631.
PINDU Panda vs PINDU Water Ghost: which should you buy?
Choose the PD6631 Panda for the boldest dial design, a leather strap, and a 10ATM water-resistance rating at $299.99. Choose the PD6510 Water Ghost for a slimmer 40mm, 13.5mm-thick case, a steel bracelet, and the same 100m rating at $107.99 — less than half the Panda's price.
| Model | Movement | Size | Key feature | Price | Who it suits |
|---|---|---|---|---|---|
| PD6631 Panda | NH35 automatic | 46mm / 20mm thick | Panda dial, sapphire crystal, 10ATM | $299.99 | Buyers who want a bold statement piece and don't mind a thick case |
| PD6510 Water Ghost | Automatic self-wind | 40mm / 13.5mm thick | Green ceramic rotating bezel, sapphire, 100m | $107.99 | Buyers who want a slimmer everyday automatic at a lower price |
| P6676 Planet Series | Miyota 8215 automatic | 48mm / 15mm thick | Domed planet dial, curved crystal, 50m (everyday splashes and hand washing) | $299.99 | Buyers who want an even bigger case but a thinner profile |
Read the full PINDU 6510 Water Ghost review if the price gap alone has you leaning toward the smaller watch — it covers the bezel, crystal, and bracelet in detail. If 46mm already feels right but you want a different movement and a thinner case at the same price, the P6676 Planet Series is the one to compare it against, not a third different model.
PD6510 Water Ghost in Black Green — 40mm, 13.5mm thick, $107.99.
P6676 Planet Series in Black / Blue Planet — 48mm, 15mm thick, $299.99.
Who should skip the PINDU PD6631 Panda?
Skip the PD6631 Panda if you want a slim case, a steel bracelet, or a lower price — the PD6510 Water Ghost offers the same 100m water-resistance rating in a 40mm, 13.5mm-thick case for $107.99. Skip it also if you need a dive-rated watch; nothing in this review's water-resistance data supports that use.
It's also not the pick if you specifically want a Miyota movement or a domed, curved crystal — that combination is what the P6676 Planet Series offers instead, at the same $299.99 price point but in a larger, thinner case.
Where to buy the PINDU PD6631 Panda Series
All three watches in this comparison are in stock on PrimeTimepiece with worldwide shipping and buyer protection: the PD6631 Panda Series at $299.99, the PD6510 Water Ghost at $107.99, and the P6676 Planet Series at $299.99. Browse the rest of the lineup in the PINDU collection, or see more water-resistant picks in our Waterproof Watches collection. For a broader look at build quality across the brand before you buy, read Are PINDU Watches Good? An Honest 2026 Review.