Side-by-side comparison of specifications and features
Compare visual case presence and physical footprint on one shared wrist. Measure your top-down wrist width for a stronger result; lug-to-lug is used when the catalog has it.
Medium (6.7″)
Estimated top width: 56.7 mm
Preliminary range: 54.7–61.8 mm.
Watch A
Visual presence
ModerateCase covers 68% of your modeled wrist width.
Physical footprint
Clear spaceEstimated clearance: 5.1 mm per side.
Watch B
Visual presence
ModerateCase covers 67% of your modeled wrist width.
Physical footprint
Clear spaceEstimated clearance: 5.3 mm per side.
Proportional guide only: visual presence and physical footprint do not predict comfort. Weight, thickness, caseback shape, rigid lugs, strap stiffness, wrist-bone prominence, wearing tension, bezel design, and case curvature change how a watch actually wears. Non-round silhouettes use a verified family shape and catalog dimensions where available; missing case height or width is estimated from a conservative family aspect ratio.
Start with the specifications that meaningfully differ. Expand the complete table for reference details and missing-data context.
| Specification | Nivada Grenchen Chronomaster Aviator Sea Diver | Nivada Grenchen F77 |
|---|---|---|
| Pricing | ||
| MSRPF77 is $1250 less at MSRP | $1,790 | $540 |
| New PriceF77 is $835 less based on the current snapshot | $2,395 | $1,560 |
| Used Price (Low)F77 is $781.1 less at the low end | $1,940 | $1,159 |
| Used Price (High) | $2,750 | $2,680 |
| 30-Day Trend | ↑ +14.2% | ↑ +23.0% |
| Used Price Range | $1,940 - $2,750 | $1,159 - $2,680 |
| Identity | ||
| Style | Chronograph, Vintage, Diver | Diver, Vintage |
| Dimensions | ||
| DiameterF77 is 0.3mm smaller | 38.3mm | 38mm |
| ThicknessF77 is 2.8mm thinner | 14.8mm | 12mm |
| Lug to Lug | 46.5mm | 46mm |
| Case | ||
| Crystal | Sapphire Crystal | Acrylic |
| Water ResistanceF77 adds 100m water resistance | 100m (recreational diving) | 200m (diving) |
Nivada Grenchen Chronomaster Aviator Sea Diver and Nivada Grenchen F77 can overlap on price or use case, but the buying decision usually comes down to water-ready utility versus dressier everyday wear, chronograph character versus diver versatility, entry price versus premium finishing or specs. They both touch the vintage and diver use case, so smaller spec differences can matter more than brand preference.
Bottom line
Water resistance is a meaningful separator here — the higher-rated option gives more flexibility for swimming or rougher daily use. Choose Nivada Grenchen Chronomaster Aviator Sea Diver if you are specifically shopping for a chronograph style watch; choose Nivada Grenchen F77 when swimming, beach use, or tougher daily wear is part of the plan.
Choose Nivada Grenchen Chronomaster Aviator Sea Diver when
Nivada Grenchen Chronomaster Aviator Sea Diver is a better fit for mechanical-watch enthusiasts, chronograph styling.
Choose Nivada Grenchen F77 when
Nivada Grenchen F77 is a better fit for mechanical-watch enthusiasts, diver styling.
Movement and upkeep
Nivada Grenchen Chronomaster Aviator Sea Diver: automatic movement
Nivada Grenchen F77: automatic movement
Both use the same movement type, so maintenance differences are limited and fit or feature details should decide the purchase.
Size and wearability
Nivada Grenchen Chronomaster Aviator Sea Diver: 38.3mm · L2L 46.5mm
Nivada Grenchen F77: 38mm · L2L 46mm
Their size profiles are relatively close, so fit comes down to shape, weight, and how each watch sits on your wrist.
Water resistance
Nivada Grenchen Chronomaster Aviator Sea Diver: 100m
Nivada Grenchen F77: 200m
Water resistance is a meaningful separator here — the higher-rated option gives more flexibility for swimming or rougher daily use.
Price and value
Nivada Grenchen Chronomaster Aviator Sea Diver: $1,790
Nivada Grenchen F77: $540
There is a real price gap here — treat the more expensive option as an upgrade decision and confirm whether the extra spend buys something you will notice in weekly use.
Style and use case
Nivada Grenchen Chronomaster Aviator Sea Diver: chronograph
Nivada Grenchen F77: diver
Nivada Grenchen Chronomaster Aviator Sea Diver leans more chronograph, while Nivada Grenchen F77 pulls toward diver use case — pick the one that matches how you will actually wear it.
Crystal and materials
Nivada Grenchen Chronomaster Aviator Sea Diver: sapphire crystal · steel
Nivada Grenchen F77: acrylic crystal · steel
Crystal choice can change long-term wear expectations — one may prioritize scratch resistance while the other keeps cost or vintage feel in check.
Nivada Grenchen F77 is often the value play at current pricing, while Nivada Grenchen Chronomaster Aviator Sea Diver makes more sense if you will use its extra features regularly.
There is a real price gap here — treat the more expensive option as an upgrade decision and confirm whether the extra spend buys something you will notice in weekly use.
Check current deals on Amazon and eBay using the buttons below — listing prices, seller quality, and condition can change quickly.
Prices change often, so compare the latest listings and condition options before you buy.
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Nivada Grenchen Chronomaster Aviator Sea Diver
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Nivada Grenchen F77
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Nivada Grenchen F77 — at 12mm thick versus 14.8mm it sits flatter, which matters more than the near-identical case width here.
Nivada Grenchen F77 — it is rated 200m versus 100m. Both are in the same broad bracket, so treat this as a tiebreaker rather than a deciding factor.
Nivada Grenchen F77 is the value pick at roughly $1250 less. Pay more only if a specific difference above matters to you — otherwise the cheaper one is the smarter buy. Confirm live listings, since marketplace pricing moves.
Evidence & Method
This page currently relies on normalized catalog fields and calculated differences. No external reviewer observation is used in its verdict.
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