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Round resin watch in sand beige with black dial analog digital display and buckle clasp

CASIO

CASIO G-Shock GA-B2100LUU-5A 200M watch

SKU CH-MBS1-1N19N

A solar-powered analog-digital watch with a bio-based resin case and strap, shock-resistant construction and 200 m water resistance

  • Watch movementSolar
  • Product shapeRound
  • Watch face colorBlack
  • Dial markingsIndex
  • Display typeAnalog Digital
  • Date displayDate
  • Solar charging keeps the watch running without battery changes
  • Bio-based resin case and strap reduce reliance on fossil-based plastics
  • 200 m water resistance suits swimming and surface water sports
  • Shock-resistant construction protects the movement from daily impacts
  • 00 mm case thickness fits comfortably under a shirt cuff

Tough Solar Sports Watch

The CASIO G-Shock GA-B2100LUU-5A combines analog and digital displays in a bio-based resin case and strap. Tough Solar movement charges the watch from any light source, removing the need for battery changes. Water resistance is rated to 200 metres for serious aquatic use. Smartphone Link adds convenient time adjustment and world-time functions.

Outdoor Athletes and Daily Wear

This model suits swimmers, divers and anyone who wants a solar-powered watch that survives heavy impact. The 37.00 mm resin case fits most wrists comfortably for all-day wear. Buyers who need a metal bracelet, sapphire crystal or built-in GPS should look at other ranges. The analog-digital layout may not appeal to those who prefer a purely digital readout.

200 Metre Water Resistance

The 200 m rating is the single specification that decides suitability for diving and high-speed water sports. ISO-compliant construction ensures the case, crown and pushers hold pressure at depth. If your activities stay at the surface, a lower-rated watch will also work. For professional saturation diving, a dedicated dive computer remains the correct tool.

How it compares

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

Price $128.99
Typical for this category: the median of 2,679 items is $130.99.

Specifications

Product
Brand nameCASIO
Design styleSports
Watch face colorBlack
Item conditionNew
Display
Display typeAnalog Digital
Size & build
Main materialResin
Product shapeRound
Strap materialResin
Closure typeBuckle Clasp
Bezel typeFixed Bezel
Housing materialResin
Case size37 mm
Watch glassMineral Crystal
Environment & compliance
Water resistance200m
More details
Watch movementSolar
Dial markingsIndex
Date displayDate
Suitable forMale

Questions about this item

Should I choose the 200M water-resistant version or a lower rating for daily wear?

The 200M rating covers swimming and surface water sports, not just splashes.

What does the 200M water resistance mean once the watch is on my wrist?

You can shower, swim and snorkel without removing it; the screw-down case back and crown keep the seal intact at depth.

How does the solar charging interface cap daily power needs?

The Tough Solar panel converts indoor and outdoor light into enough energy to run the analogue-digital display and smartphone link continuously.

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