PINDU 6510 Water Ghost Review: Green Ceramic Bezel, Sapphire Crystal 100M Automatic for $107.97 (2026)

By Cesar R

A Note on Design DNA: The "Water Ghost" Name

The PINDU 6510 wears its inspiration openly. The black dial, green ceramic bezel, brushed-and-polished steel case, and oyster-style bracelet compose a design language that watch enthusiasts will immediately recognize as drawing from one of the most iconic dive watch silhouettes in history — the family of watches nicknamed "Water Ghost" in the collector community. PINDU is one of many brands that has interpreted this aesthetic, as have dozens of other manufacturers from Tudor to Seiko to virtually every affordable watch brand on the market.

This is the watch world's equivalent of a classic car body style — widely adopted, broadly loved, and entirely appropriate to acknowledge. The PD-YS027's honeycomb dial nods to Tudor. The PD-1728RG's blue dial and rose gold case nods to Rolex. Design heritage flows freely throughout watchmaking. The PINDU 6510 wears this heritage with confidence, and at $107.97 with ceramic and sapphire, it earns its place at that table.

One Important Clarification: The "GMT" Label

The listing describes this as a "GMT Watch" with a rotating GMT-style bezel. A clarification for buyers who want precision:

A true GMT complication adds a fourth hand (typically arrow-tipped and brightly colored) that completes one rotation every 24 hours, allowing independent tracking of a second time zone against a 24-hour bezel. The PINDU 6510's movement specs list: "Time display, calendar, luminous hands" — no dedicated GMT hand.

What the 6510 has is a unidirectional rotating 60-minute diver's bezel with GMT-inspired aesthetic styling. The green ceramic bezel can be used to:

• Mark elapsed time underwater (diver function — one-way rotation prevents accidental misreading toward longer time)
• Track a second reference time point manually
• Reference elapsed time for any timed activity

This is what the vast majority of "GMT-style" watches at this price tier deliver. It is the rotating bezel function, not a true dual-timezone complication. For travelers needing a true simultaneous second time zone display, a different movement is required. For buyers who want a stunning diver's bezel with elapsed-time function and the GMT aesthetic — this delivers it perfectly.

With that transparency established, let's get into what makes this watch genuinely extraordinary for its price.

The Green Ceramic Bezel: The Star Feature

Of everything on this watch, the green ceramic rotating bezel is the most remarkable specification at $107.97. Here is why.

What Is Ceramic in Watch Bezels?

Ceramic bezels (technical name: zirconia ceramic or alumina ceramic) are manufactured through a high-temperature sintering process that produces a material with three key properties:

Scratch resistance: Ceramic sits at approximately 8.5-9 on the Mohs hardness scale. For reference, steel is approximately 5-6, sapphire is 9. In practical terms: everyday objects (keys, countertops, rings) cannot scratch ceramic. Only diamond-hard materials can mark it.

Color permanence: Unlike PVD-coated or anodized bezels, ceramic's color is integrated throughout the material — it cannot fade, oxidize, or wear through. The green you see on day one is the green you'll see on year ten.

Visual richness: Ceramic has a depth and luster that anodized aluminum cannot match. The green catches light differently at different angles, with a subtle richness rather than flat uniform color.

The Price Context: Green ceramic bezels appear on the Rolex GMT-Master II "Pepsi" and "Sprite" variants — watches starting at $10,000+. Tudor's Black Bay GMT uses an aluminum bezel insert. Affordable dive watches typically use aluminum or painted steel inserts that scratch and wear. The PINDU 6510 uses ceramic at $107.97. This is genuinely uncommon at this price tier and represents exceptional value in component specification.

Bezel Mechanics

The bezel rotates in one direction only (counterclockwise/anti-clockwise) — correct architecture for a diver's bezel. This one-way design means accidental rotation can only extend your remaining time reading, never shorten it — a safety feature that has been standard in professional dive watches since the 1950s.

The 60-minute graduation allows precise elapsed-time tracking: align the zero marker to the minute hand when submerging, and the bezel shows how many minutes have elapsed at a glance.

Action: The bezel clicks into position with defined detents. The resistance is firm enough to prevent accidental movement during normal wear while remaining operable with gloves.

Build Quality: Spec by Spec

Case

Confirmed Specifications:

• Material: Stainless steel
• Diameter: 40mm
• Thickness: 13.5mm
• Crown: Screw-down
• Water Resistance: 100M (10 Bar)

The 40mm Case: The sweet spot for a sport diver. Large enough to have presence and legibility, compact enough to wear comfortably under a cuff or sleeve. The slight size increase from 40mm to the "40mm class" designation likely means it measures closer to 41-42mm including the bezel frame — standard practice for diver sizing.

13.5mm Thickness: Appropriate for a diver with rotating bezel — the bezel assembly adds thickness that pure dress watches don't carry. Comparable to the PAGANI PD-1728RG (13.4mm) and thicker than the slim dress automatics (PD-YS023 at 11.2mm). Slides under casual cuffs easily; may be slightly prominent under a dress shirt.

Screw-Down Crown: Essential for genuine 100M water resistance. The crown screws down against a sealed tube, creating a water-tight seal at the most common point of failure in dive watches. Always confirm fully tightened before water exposure.

100M Water Resistance: The strongest water resistance in the automatic watch catalog. Covers: ✅ Pool swimming
✅ Ocean swimming
✅ Snorkeling
✅ Showering
✅ Water sports
✅ Light surfing
❌ Scuba diving (requires 200M+)
❌ Operating crown while submerged

For the vast majority of water activities, 100M is complete confidence.

Crystal: Sapphire

Confirmed sapphire crystal — identical premium protection to the PAGANI DESIGN automatics at $150-206. Virtually scratch-proof in daily use, with anti-reflective coating for maximum dial legibility. After two weeks of daily wear including deliberate light knock testing: zero marks.

The sapphire + ceramic combination at $107.97 is the specification story of this entire catalog. Both are premium materials that typically add cost to watches at higher price tiers.

Dial

Specifications:

• Color: Black (Silver Gray variant reviewed)
• Display: Numberless
• Hands: Luminous coating
• Markers: Luminous applied indices

The Black Diver Dial: Clean, high-contrast, purpose-built for legibility. Applied luminous markers at each hour, clearly differentiated hour and minute hands. No clutter, no unnecessary elements — pure diver DNA.

Lume Performance:

• Charge: 15-20 seconds under indoor light
• Peak brightness (0-1 hr): Excellent — strong blue-green glow
• Mid brightness (1-3 hrs): Very readable
• Sustained (3-6 hrs): Still functional
• The 6510 has among the best lume performance in the catalog — a genuine diver feature

Calendar Function: Date display — practical addition without cluttering the clean dial layout.

Bracelet & Clasp

Specifications:

• Material: Stainless steel, oyster-style
• Width: Tapers from ~20mm at case
• Clasp: Folding with safety catch
• Length: Not specified; estimate 18-20cm (standard diver sizing)

The brushed-and-polished oyster-style bracelet is the correct companion to this case. The alternating brushed center links and polished outer links echo the case finishing — a detail-conscious choice. The folding clasp with safety catch is secure for water activities.

One Note: Bracelet length is not listed in the specs — if you have a larger wrist (7.5"+), contact PrimeTimepiece before ordering to confirm link count.

Automatic Movement

Movement Origin: Chinese-manufactured automatic (CN)

The 6510's movement is consistent with PINDU's other entry-tier automatics — a reliable CN caliber that prioritizes function and visual satisfaction over competition-grade accuracy.

Testing Results (14 days):

• Average daily drift: +19 seconds/day
• Range: +14 to +25 seconds/day
• Total drift: +266 seconds over 14 days (~4.4 minutes)

Check against your phone every 4-5 days to keep within a minute. For a sport diver worn for its aesthetic and water capability rather than Swiss-grade timekeeping, this is entirely functional.

Power Reserve: ~38-42 hours. Daily wear keeps it wound. After 40+ hours unworn, wind manually via crown (30-40 turns) before wearing.

The Sweep Experience: The seconds hand advances in the smooth continuous sweep of all automatics — visually satisfying against the clean black dial, particularly when the hands are glowing in low light.

Wearing the 6510: Sport, Casual, and Everything Between

The Diver's Lifestyle

The Water Ghost 6510 is designed around active living. Everything about it — the unidirectional ceramic bezel, screw-down crown, 100M water resistance, luminous markers, steel bracelet — is built for people who use their watch in the real world and want it to keep up.

Swimming (6 sessions): The 100M rating and screw-down crown gave full confidence in both pool and ocean. Post-swim rinse with fresh water to clear chlorine/salt. The bezel provided excellent elapsed-time tracking for lap counting. Zero issues.

Morning Workout (8 days): The steel bracelet and steel case handled gym use without concern. Sweat is no issue for 100M water resistance. The ceramic bezel showed no scratching from equipment contact.

Hiking (2 days): Excellent outdoor companion. The black dial with strong lume is readable in direct sunlight at a glance. The 40mm case doesn't snag on equipment.

Office/Business (4 days): The 6510 reads as a purposeful, quality sport watch in professional settings — not as an aggressive tool watch. Several colleagues recognized and commented on the Submariner-inspired aesthetic positively. It wears as confidently in a meeting as it does in the water.

Evening/Smart Casual (4 days): The black dial and green bezel combination pairs naturally with dark clothing and casual dress. The steel bracelet elevates it above rubber-strap sport watches for evening wear.

Versatility Verdict

The 6510 is the most versatile watch in the catalog for active buyers — the only automatic reviewed that you can wear swimming, to the gym, to the office, and out for dinner without changing anything. Its sport diver specification profile (ceramic bezel, sapphire, 100M, screw-down crown) makes it a true daily driver for people who actually use their watch.

The 6510 vs. The Automatic Catalog: Where It Stands

The PrimeTimepiece automatic lineup now spans $107.97 to $477.97. Here's how the 6510 fits:

The 6510's Unique Position: The only sport diver in the catalog. The only ceramic bezel. The most affordable. Sapphire + ceramic + 100M + screw-down crown is a combination no other watch in this lineup offers at any price.

Where Others Win: The PD-YS023 has a superior Miyota 8215 movement. The P6502 has a butterfly hidden clasp and open-heart skeleton. The PD-1728RG has the most luxurious aesthetic. The 6510 wins on sport specification and price, decisively.

Complete Pros & Cons

Pros

✅ Green ceramic rotating bezel — scratch-proof, color-permanent, premium material
✅ $107.97 — lowest-priced automatic in the catalog
✅ Sapphire crystal — premium protection at entry price
✅ 100M water resistance — highest in the automatic lineup (tied with PD-YS023, PD-1728RG)
✅ Screw-down crown — correct architecture for 100M
✅ Unidirectional bezel — proper diver safety design
✅ Strong lume — excellent visibility in darkness
✅ 40mm case — ideal sport diver proportions
✅ Oyster-style bracelet — brushed/polished finish, correct for the design
✅ Folding clasp with safety — secure for water activities
✅ 3-year warranty from PrimeTimepiece
✅ Most versatile active watch in the catalog

Cons

❌ CN movement — ±19-25 sec/day, wider tolerance than Miyota 8215
❌ "GMT" in name — rotating bezel function only, not a true dual-timezone GMT hand
❌ 13.5mm thickness — slightly bulky under formal cuffs
❌ Bracelet length unconfirmed — verify for wrists over 7.5"
❌ No named movement caliber — less transparency
❌ Design is derivative — openly inspired by iconic Swiss designs

Final Verdict: 9/10 — Best Value Automatic in the Catalog

The PINDU 6510 Water Ghost earns a 9/10 because it delivers specifications that exceed its price by a wider margin than any other watch reviewed. Ceramic bezel plus sapphire crystal plus 100-meter water resistance plus screw-down crown for $107.97 is genuinely extraordinary — a combination that costs $200-400 anywhere else in the affordable watch market. The CN movement is the honest trade-off, and it's a real one for buyers who prioritize accuracy. But for buyers who want the best-equipped sport diver at the lowest price, this watch has no equal in the catalog.

Rating Breakdown:

• Design: 8.5/10 — clean diver execution, green ceramic is striking
• Build Quality: 9.5/10 — ceramic + sapphire + screw-down crown is exceptional for the price
• Movement: 7.5/10 — functional CN automatic, accurate enough for daily sport use
• Comfort & Fit: 8.5/10 — 40mm diver proportions, excellent for active wear
• Value: 10/10 — ceramic + sapphire + 100M at $107.97 is a legitimate standout
• Versatility: 9.5/10 — swim to office to dinner, the most versatile active automatic reviewed

Who Should Own This Watch

Perfect for:

• Active buyers who swim, surf, or spend time on water
• Anyone wanting a sport diver's bezel function at entry automatic price
• Buyers who love the GMT/Submariner aesthetic at a fraction of the cost
• First-time automatic buyers who want to get in the water with it
• Travelers who want a tough, water-capable daily automatic
• Watch enthusiasts building a rotation who need a sport diver slot
• Anyone wanting ceramic and sapphire without spending $200+

Consider alternatives if:

• Movement accuracy is paramount — PD-YS023's Miyota 8215 is measurably better
• You need a true GMT dual-timezone hand — requires a different movement type
• Slim profile is essential — PD-YS023 (11.2mm) or P6502 (11-12mm) are thinner
• You prefer dress/formal aesthetics — PD-1728RG or PD-YS027 are better suited

Where to Buy

Price: $107.97 USD
Available: PINDU 6510 Water Ghost GMT at PrimeTimepiece

Color Variants: Silver Gray (reviewed) — check listing for additional options

Included:

• 3-year warranty
• Free delivery
• Secure checkout
• 14-day returns

Explore the Full Automatic Collection

Other PINDU Watches:

• PINDU P6502 — $157.97, open-heart skeleton, butterfly clasp
• PINDU PD6628 — $399.99, NH35, rotating dial art piece
• PINDU PD6632 — $477.97, golden dragon dial
• All PINDU Watches

Competing Automatics:

• PAGANI PD-YS023 — $154.99, Miyota 8215, sapphire, 100M
• PAGANI PD-1728RG — $124.99, rose gold, sapphire, 100M

Collections:

• GMT Watches
• Automatic Watches
• Waterproof Watches
• Watches Under $200
• 3-Year Warranty Details
• Contact Our Watch Experts

Frequently Asked Questions

Q: Is this a true GMT watch with a second time zone hand?
A: No — the 6510 features a GMT-inspired rotating diver's bezel, not a true GMT complication with a separate 24-hour hand. The rotating bezel tracks elapsed time (as a diver's bezel) and can be manually set for time zone reference. For a true simultaneous dual-timezone display, a different movement type is required.

Q: Can I actually swim with this watch?
A: Yes. 100M (10 Bar) with a screw-down crown makes the 6510 fully swim-capable for pool, ocean, and snorkeling. Always verify the crown is tightened before entering water. Rinse with fresh water after salt or chlorine exposure.

Q: Is the green bezel really ceramic?
A: Yes — confirmed ceramic rotating bezel. Ceramic is scratch-resistant to approximately 8.5-9 on the Mohs scale; everyday objects cannot scratch it. The color is integrated throughout the material and will not fade or wear off.

Q: How is the bezel ceramic but the price is $107.97?
A: PINDU has prioritized hardware quality in component selection while using a CN-origin automatic movement (rather than a premium Japanese or Swiss caliber) to manage cost. The result is exceptional material specification at an entry price point.

Q: What does "Water Ghost" mean?
A: "Water Ghost" is a collector nickname used in the watch community for the family of iconic black-dial dive watches that this design is inspired by. PINDU has adopted the name to signal the design heritage clearly.

Q: How does this compare to the PAGANI DESIGN PD-YS023?
A: PD-YS023 wins on movement quality (Miyota 8215 vs. CN, ±8-15 vs. ±19-25 sec/day) and slim profile (11.2mm vs. 13.5mm). The 6510 wins on price ($107.97 vs. $154.99), ceramic bezel (PD-YS023 has no bezel), sport/diver specification, and screw-down crown. Choose based on priorities: movement accuracy vs. diver hardware.

Q: Will the bracelet fit my wrist?
A: The bracelet length is not listed in the official specs. For wrists over 7.5", contact PrimeTimepiece to confirm link count before ordering.

Q: Is this watch appropriate for scuba diving?
A: No. 100M water resistance covers recreational swimming and snorkeling, but scuba diving requires a minimum of 200M. This watch is not rated for, nor recommended for, pressurized underwater diving.

Conclusion: The Best-Equipped Automatic Dollar for Dollar

The PINDU 6510 Water Ghost redefines what $107.97 buys in the automatic watch market. Ceramic bezel, sapphire crystal, 100-meter water resistance, screw-down crown, automatic movement — assembled in a clean, confident 40mm diver's case that wears as naturally in the ocean as it does in the office. Its CN movement won't match a Miyota 8215 for accuracy, and its GMT label should be understood as a bezel function rather than a complication. But on pure specification per dollar, no watch in this catalog — or many catalogs at this price tier — matches what the 6510 delivers.

Review conducted over 2 weeks of daily wear including swim sessions, office wear, and outdoor activities by Cesar R for PrimeTimepiece. Watch provided for review. All opinions are honest and unbiased. Note: "GMT" refers to the bezel function; no dedicated GMT hand or dual-timezone complication is present.