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 74% of your modeled wrist width.
Physical footprint
Clear spaceEstimated clearance: 4.3 mm per side.
Watch B
Visual presence
BoldCase covers 76% of your modeled wrist width.
Physical footprint
Clear spaceEstimated clearance: 5.2 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 Edifice EFV-100 | Casio G-Shock |
|---|---|---|
| Pricing | ||
| MSRPEdifice EFV-100 is $70 less at MSRP | $80 | $150 |
| New PriceG-Shock is $13.9 less based on the current snapshot | $134 | $120 |
| Used Price (Low)G-Shock is $57.7 less at the low end | $124 | $66 |
| Used Price (High) | $442 | $185 |
| 30-Day Trend | ↑ +22.6% | ↓ -6.2% |
| Used Price Range | $124 - $442 | $66 - $185 |
| Identity | ||
| Style | Sports, Casual | Ana-Digi, Sports, Tool |
| Dimensions | ||
| DiameterEdifice EFV-100 is 0.9mm smaller | 42mm | 42.9mm |
| ThicknessEdifice EFV-100 is 0.3mm thinner | 10.9mm | 11.2mm |
| Lug Width | 22mm | 16mm |
| Lug to Lug | 48mm | 46.2mm |
| Case | ||
| Case Material | Stainless Steel | Resin |
| Water ResistanceG-Shock adds 100m water resistance | 100m (recreational diving) | 200m (diving) |
1 field is excluded from the differences view because one watch lacks comparable data. Use “All specs” to inspect those gaps.
Casio Edifice EFV-100 and Casio G-Shock GMA-S2100 (small) can overlap on price or use case, but the buying decision usually comes down to water-ready utility versus dressier everyday wear, sports character versus ana-digi versatility. They both touch the sports 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 Casio Edifice EFV-100 if you are specifically shopping for a sports style watch; choose Casio G-Shock GMA-S2100 (small) when swimming, beach use, or tougher daily wear is part of the plan.
Choose Casio Edifice EFV-100 when
Casio Edifice EFV-100 is a better fit for low-maintenance daily wear, sports styling.
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.
Movement and upkeep
Casio Edifice EFV-100: quartz movement
Casio G-Shock GMA-S2100 (small): 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 Edifice EFV-100: 42mm · L2L 48mm
Casio G-Shock GMA-S2100 (small): 42.9mm · L2L 46.2mm · 41g
Their size profiles are relatively close, so fit comes down to shape, weight, and how each watch sits on your wrist.
Water resistance
Casio Edifice EFV-100: 100m
Casio G-Shock GMA-S2100 (small): 200m
Water resistance is a meaningful separator here — the higher-rated option gives more flexibility for swimming or rougher daily use.
Price and value
Casio Edifice EFV-100: $80
Casio G-Shock GMA-S2100 (small): $120
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 Edifice EFV-100: sports
Casio G-Shock GMA-S2100 (small): ana-digi
Casio Edifice EFV-100 leans more sports, while Casio G-Shock GMA-S2100 (small) pulls toward ana-digi use case — pick the one that matches how you will actually wear it.
Crystal and materials
Casio Edifice EFV-100: mineral crystal · steel
Casio G-Shock GMA-S2100 (small): mineral crystal · resin
Materials are broadly similar, so finish, fit, and price will matter more than the materials list alone.
Casio Edifice EFV-100 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.
WatchCompared may earn a commission from qualifying purchases through affiliate links. This does not change your price.
Casio Edifice EFV-100
Affiliate links — WatchCompared earns a commission on qualifying purchases. This doesn't affect your price.
Casio G-Shock
Affiliate links — WatchCompared earns a commission on qualifying purchases. This doesn't affect your price.
Casio G-Shock GMA-S2100 (small) — it is 46.2mm lug-to-lug versus 48mm, and lug-to-lug is what decides whether a watch overhangs a smaller wrist.
Casio G-Shock GMA-S2100 (small) — it is rated 200m versus 100m. Both are in the same broad bracket, so treat this as a tiebreaker rather than a deciding factor.
Casio Edifice EFV-100 is the value pick at roughly $40 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.
Compare Watches
Start a new multi-watch comparison
Compare Watch Prices
US-focused price comparison workflow
Related Budget Page
Compare similar watches in the same price band
Watch Buying Guides
Read movement, fit, and buying guides before deciding
Smartwatch Compare Hub
Compare Apple, Garmin, Samsung, and more if you are cross-shopping smartwatches
Watch FAQ
Movement, WR, and beginner questions
Casio G-Shock GMA-S2100 (small) vs Casio G-Shock GMD-S5600
tier1High-intent comparison page
Casio G-Shock GMA-S2100 (small) vs Casio G-Shock GA-100
tier2High-intent comparison page
Casio G-Shock GMA-S2100 (small) vs Casio G-Shock GA-2100
tier2High-intent comparison page
Casio G-Shock GM-S2100 (small metal) vs Casio G-Shock GMA-S2100 (small)
tier2High-intent comparison page
Casio G-Shock DW-5600E vs Casio G-Shock GMA-S2100 (small)
tier2High-intent comparison page
Casio Duro vs Casio G-Shock GMA-S2100 (small)
tier2High-intent comparison page
Continue comparing specs and pricing, or start a new shortlist with the comparison tool and browse pages.
Affiliate links — WatchCompared earns a commission on qualifying purchases. This doesn't affect your price.
Affiliate links — WatchCompared earns a commission on qualifying purchases. This doesn't affect your price.
You can compare up to 10 watches. Browse watches and click "Add to Compare" to add more.
