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Round green-dial G-Shock in matte bio-based resin, 44.40 mm case, analog-digital display, 200 m water resistance

CASIO

CASIO G-Shock GBM-2100A-1A3 Green Dial 200m

SKU CH-Y8KG-YXT1M

A solar-powered G-Shock with a green analog-digital dial, bio-based resin case and strap, and 200 m water resistance

  • Watch movementSolar
  • Product shapeRound
  • Watch face colorGreen
  • Dial markingsIndex
  • Display typeAnalog Digital
  • Date displayDate
  • Bio-based resin case reduces environmental impact
  • Tough Solar movement eliminates battery changes
  • 200 m water resistance handles diving and swimming
  • 40 mm case thickness delivers rugged durability
  • Analog-digital display combines classic and modern readouts

Green dial G-Shock for daily wear

The GBM-2100A-1A3 pairs a green dial with a bio-based resin case and strap. Tough Solar charging removes the need for battery changes. Smartphone link syncs time and activity data. Shock resistance and 200 metre water resistance suit sport and commute alike.

Solar power replaces battery swaps

Solar charging eliminates routine cell replacements and the risk of a dead watch after storage. The analog-digital display adds stopwatch, timer and world-time functions a pure analog cannot. The jump is worth it when you want set-and-forget power with connected features.

200 metre depth and solar headroom

Comfortable for swimming, surfing and heavy rain. Solar reserve keeps the movement running months in darkness. Runs out at depths beyond 200 metres or if the smartphone link is required without a compatible phone.

How it compares

Measured against everything we stock in Analog & Digital Wristwatches, at today’s prices. Recalculated every night.

Price $179.99
Pricier than about 64% of the 2,679 comparable items (median $130.99).

Specifications

Product
Brand nameCASIO
Design styleSports
Watch face colorGreen
Item conditionNew
Display
Display typeAnalog Digital
Size & build
Main materialResin
Product shapeRound
Strap materialResin
Closure typeBuckle Clasp
Bezel typeFixed Bezel
Housing materialResin
Case size44.4 mm
Watch glassMineral Crystal
Environment & compliance
Water resistance200m
More details
Watch movementSolar
Dial markingsIndex
Date displayDate
Suitable forMale

Questions about this item

What case thickness must the strap accommodate on the GBM-2100A-1A3?

The resin case measures 44.40 mm thick, so any replacement strap must fit that lug width and case profile.

How is the Tough Solar movement charged after unboxing the GBM-2100A-1A3?

Expose the dial to bright light for several hours until the power indicator shows full; the solar cell charges the internal capacitor automatically.

When should the mineral crystal be inspected on a 200 m water-resistant G-Shock?

Check the crystal for scratches or chips after any hard impact and have the seals pressure-tested every two years to maintain 200 m resistance.

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