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
DominantCase covers 84% of your modeled wrist width.
Physical footprint
Near the edgeEstimated clearance: 2.6 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 | Casio SGW-100-1V |
|---|---|---|
| Pricing | ||
| MSRPSGW-100-1V is $60 less at MSRP | $150 | $90 |
| Identity | ||
| Style | Ana-Digi, Sports, Tool | Digital, outdoor, Tool |
| Dimensions | ||
| DiameterG-Shock is 4.7mm smaller | 42.9mm | 47.6mm |
| ThicknessG-Shock is 2mm thinner | 11.2mm | 13.2mm |
| Lug Width | 16mm | 20mm |
| Lug to Lug | 46.2mm | 51.5mm |
| Case | ||
| Bezel | Fixed | fixed |
| Dial | ||
| Dial Color | Black | black |
| LuminousG-Shock includes luminous markers | ✓ Included | Not included |
6 fields are excluded from the differences view because one watch lacks comparable data. Use “All specs” to inspect those gaps.
Casio G-Shock GMA-S2100 (small) and Casio SGW-100-1V can overlap on price or use case, but the buying decision usually comes down to wrist presence versus easier fit, ana-digi character versus digital versatility. They both touch the tool use case, so smaller spec differences can matter more than brand preference.
Bottom line
Fit is a real separator here — compare case width and lug-to-lug before deciding, especially if wrist comfort matters more than headline features. Choose Casio G-Shock GMA-S2100 (small) if you want a smaller case footprint on the wrist; choose Casio SGW-100-1V if you prefer more dial presence and a larger case feel.
Choose Casio G-Shock GMA-S2100 (small) when
Casio G-Shock GMA-S2100 (small) is a better fit for smaller wrists, low-maintenance daily wear, ana-digi styling.
Choose Casio SGW-100-1V when
Casio SGW-100-1V is a better fit for buyers who want more wrist presence, low-maintenance daily wear, digital styling.
Movement and upkeep
Casio G-Shock GMA-S2100 (small): quartz movement
Casio SGW-100-1V: quartz movement
Both use the same movement type, so maintenance differences are limited and fit or feature details should decide the purchase.
Size and wearability
Casio G-Shock GMA-S2100 (small): 42.9mm · L2L 46.2mm · 41g
Casio SGW-100-1V: 47.6mm · L2L 51.5mm
Fit is a real separator here — compare case width and lug-to-lug before deciding, especially if wrist comfort matters more than headline features.
Water resistance
Casio G-Shock GMA-S2100 (small): 200m
Casio SGW-100-1V: 200m
Water resistance is similar on paper, so focus on fit, features, and price instead.
Price and value
Casio G-Shock GMA-S2100 (small): $120
Casio SGW-100-1V: $90
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
Casio SGW-100-1V: digital
Casio G-Shock GMA-S2100 (small) leans more ana-digi, while Casio SGW-100-1V pulls toward digital 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
Casio SGW-100-1V: mineral crystal · resin
Materials are broadly similar, so finish, fit, and price will matter more than the materials list alone.
Casio SGW-100-1V is often the value play at current pricing, while Casio G-Shock GMA-S2100 (small) 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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Casio SGW-100-1V
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Casio G-Shock GMA-S2100 (small) — it is 46.2mm lug-to-lug versus 51.5mm, and lug-to-lug is what decides whether a watch overhangs a smaller wrist.
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 SGW-100-1V is the value pick at roughly $30 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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