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Casio G-Shock GA-B2100-2ADR Analog Digital 2100 Series Solar Men's Watch

Casio G-Shock GA-B2100-2ADR Analog Digital 2100 Series Solar Men's Watch

Best price now

$165.75at YOUPLUSChecked Nov 9

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Price facts

  • Last seen at $165.75 at YOUPLUS on Nov 9.

Our take on the Casio G-Shock GA-B2100-2ADR Analog Digital 2100 Series Solar Men's Watch

The Casio G-Shock GA-B2100 is the solar-powered, Bluetooth-connected version of the octagonal 2100 series, the line often called the CasiOak for its resemblance to a luxury steel sports watch. It keeps the slim 11.9 mm carbon-core case and analog-digital dial but adds Tough Solar charging and phone link for automatic time correction. It suits people who want a rugged everyday watch with a dressier look than a classic square G-Shock, and it undercuts the full-metal GM-B2100 while offering more features than the basic battery GA-2100. Owners like the light, low-profile case and the solar convenience; some find the analog hands and negative LCD hard to read in low light.

Best forEveryday wear with casual or smart-casual outfitsBuyers who want G-Shock toughness without the bulky square lookTravelers who want automatic time correction via phonePeople who dislike changing batteries
Pros
  • Tough Solar charging reduces battery swaps
  • Bluetooth link corrects time automatically through the Casio Watches app
  • Slim 11.9 mm carbon-core case wears light on the wrist
  • 200 m water resistance and shock resistance
  • Octagonal bezel gives a cleaner look than most G-Shocks
  • Hand shift moves the hands aside so the LCD stays readable
Cons
  • Analog hands and dark LCD can be hard to read in dim light
  • No sapphire crystal; mineral glass scratches more easily
  • Bluetooth and solar features add complexity over the basic GA-2100
  • Small dial markings make the analog display busy
  • No atomic radio sync, so accuracy depends on the phone link

Casio G-Shock GA-B2100-2ADR Analog Digital 2100 Series Solar Men's Watch prices at every store

  • YOUPLUSNew

    In stockShips from Japan · priced in JPY (¥26,180) · duties may applyReturn policy

    $165.75Checked Nov 9
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What reviewers say

Owners of the 2100 line praise the slim, good-looking case and the solar-plus-Bluetooth upgrade over the battery-only GA-2100. Common complaints are legibility of the hands and LCD in low light and the mineral crystal.

What people mention
  • LegibilityCriticisedOwners say the analog hands and dark LCD are hard to read in low light.
  • Solar chargingPraisedBuyers value never needing to replace a battery.
  • Size and fitPraisedThe slim carbon case is called light and comfortable for daily wear.
  • BuildMixedThe watch feels tough, but the mineral crystal is said to scratch easily.
  • App syncPraisedUsers like automatic time correction through the Casio Watches app.

About the Casio G-Shock GA-B2100-2ADR Analog Digital 2100 Series Solar Men's Watch

High-quality product from Japan.

Questions and answers

Is the GA-B2100 worth it over the standard GA-2100?
If you want solar charging and automatic time sync, yes. The case shape and size are the same, so the upgrade is mostly about never changing a battery and keeping accurate time through your phone.
Does it charge in normal indoor light?
Tough Solar works from most light sources, but dim indoor light charges slowly. Regular exposure to daylight keeps it topped up.
Can I use it without a phone?
Yes. Bluetooth is optional; the watch keeps time and charges on its own. You lose automatic time correction and app-based settings.
How water resistant is it?
It is rated to 200 m, which covers swimming and snorkeling. It is not a dive computer.
What is in the box?
The watch, a Casio manual and warranty paperwork. No charging cable is needed because it charges from light.
How does it compare with the full-metal GM-B2100?
The GM-B2100 has a steel case and bracelet and feels heavier and dressier. The GA-B2100 is lighter, cheaper to own and uses the same module features.
Where is the Casio G-Shock GA-B2100-2ADR Analog Digital 2100 Series Solar Men's Watch cheapest?
At YOUPLUS, for $165.75, as of our latest check.

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