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
BoldCase covers 76% of your modeled wrist width.
Physical footprint
Clear spaceEstimated clearance: 5.2 mm per side.
Watch B
Visual presence
BoldCase covers 73% of your modeled wrist width.
Physical footprint
Clear spaceEstimated clearance: 4.8 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 | Casio G-Shock | Orient Mako II |
|---|---|---|
| Pricing | ||
| MSRPG-Shock is $80 less at MSRP | $150 | $230 |
| New PriceG-Shock is $169.5 less based on the current snapshot | $121 | $290 |
| Used Price (Low)G-Shock is $201.8 less at the low end | $69 | $271 |
| Used Price (High) | $206 | $469 |
| 30-Day Trend | ↓ -9.1% | ↑ +27.1% |
| Used Price Range | $69 - $206 | $271 - $469 |
| Identity | ||
| Style | Ana-Digi, Sports, Tool | Diver, Tool |
| Dimensions | ||
| DiameterMako II is 1.4mm smaller | 42.9mm | 41.5mm |
| ThicknessG-Shock is 1.8mm thinner | 11.2mm | 13mm |
| Lug Width | 16mm | 22mm |
| Lug to Lug | 46.2mm | 47mm |
| Movement | ||
| Movement | Quartz | Automatic |
| Case | ||
| Case Material | Resin | Stainless Steel |
| Bezel | Fixed | Unidirectional rotating |
1 field is excluded from the differences view because one watch lacks comparable data. Use “All specs” to inspect those gaps.
This Casio G-Shock GMA-S2100 (small) vs Orient Mako II comparison is less about a universal winner and more about mechanical feel versus low-maintenance convenience, ana-digi character versus diver versatility, entry price versus premium finishing or specs. Treat it as a value-versus-upgrade decision — confirm the extra spend solves a problem you will notice every week.
Bottom line
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. Choose Casio G-Shock GMA-S2100 (small) if you want a lower-maintenance daily watch; choose Orient Mako II if you prefer a mechanical watch experience and do not mind more upkeep.
Choose Casio G-Shock GMA-S2100 (small) when
Casio G-Shock GMA-S2100 (small) is a better fit for low-maintenance daily wear, ana-digi styling.
Choose Orient Mako II when
Orient Mako II is a better fit for mechanical-watch enthusiasts, diver styling.
Movement and upkeep
Casio G-Shock GMA-S2100 (small): quartz movement
Orient Mako II: automatic movement
Casio G-Shock GMA-S2100 (small) uses a quartz movement, while Orient Mako II uses a automatic movement — that changes day-to-day ownership, upkeep, and the overall feel on the wrist.
Size and wearability
Casio G-Shock GMA-S2100 (small): 42.9mm · L2L 46.2mm · 41g
Orient Mako II: 41.5mm · L2L 47mm
Their size profiles are relatively close, so fit comes down to shape, weight, and how each watch sits on your wrist.
Water resistance
Casio G-Shock GMA-S2100 (small): 200m
Orient Mako II: 200m
Water resistance is similar on paper, so focus on fit, features, and price instead.
Price and value
Casio G-Shock GMA-S2100 (small): $121
Orient Mako II: $230
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
Casio G-Shock GMA-S2100 (small): ana-digi
Orient Mako II: diver
Casio G-Shock GMA-S2100 (small) leans more ana-digi, while Orient Mako II pulls toward diver use case — pick the one that matches how you will actually wear it.
Crystal and materials
Casio G-Shock GMA-S2100 (small): mineral crystal · resin
Orient Mako II: mineral crystal · steel
Materials are broadly similar, so finish, fit, and price will matter more than the materials list alone.
Casio G-Shock GMA-S2100 (small) is often the value play at current pricing, while Orient Mako II 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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Casio G-Shock
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Orient Mako II
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Quartz and solar models are usually easier for grab-and-go use, while automatic and manual watches appeal more to buyers who enjoy the mechanical side of watch ownership.
Casio G-Shock GMA-S2100 (small) — at 11.2mm thick versus 13mm it sits flatter, which matters more than the near-identical case width here.
They are rated the same, so water resistance will not decide this. Choose on strap material and how much you mind scratching the case.
Casio G-Shock GMA-S2100 (small) is the value pick at roughly $109 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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