StoreDeal.ai store
Shop
  • Deals
  • Deal checker
  • Black Friday
  • Buying guides
  • Brands
  • Stores
Travel
  • Flight deals
  • Hotel deals
Company
  • Research
  • Press
  • Use in AI assistants
  • Contact
  • deal.ai apps
Black Friday 2026
  • Walmart
  • Best Buy
  • Target
  • TVs
  • Laptops
  • Headphones
  • Apple
  • Gaming
  • Vacuums
  • Kitchen
  • Toys
  • Smartwatches
  • Tablets
  • Furniture
  • Mattresses
© Deal.ai Inc.·2222 Ponce de Leon Blvd, Miami, FL 33134·support@deal.ai
TermsPrivacy
Deal.ai › Casio
Casio
G-SHOCK アナログデジタル 2100シリーズ メンズ 腕時計 GA-B2100-1A
Casio

G-SHOCK アナログデジタル 2100シリーズ メンズ 腕時計 GA-B2100-1A

Best price now

$139.69at BanzaiHobbyChecked Nov 9

Prices are checked against each store and labelled with when.

Visit BanzaiHobby

Ask our agent about this product

It checks today's price at every store, compares the alternatives and answers in about a minute.

Enter to send, Shift+Enter for a new line

Price facts

  • Last seen at $139.69 at BanzaiHobby on Nov 9.

Our take on the G-SHOCK アナログデジタル 2100シリーズ メンズ 腕時計 GA-B2100-1A

The Casio G-SHOCK GA-B2100 is the Bluetooth and solar version of the popular 2100 series, the octagonal-case watch modeled on the original DW-5000C. It adds Tough Solar charging and Bluetooth pairing with the Casio Watches app for automatic time correction, while keeping the analog-digital display, 200 m water resistance and shock-resistant build. It suits people who want a rugged everyday watch with a retro look and don't want to change batteries. Against the standard GA-2100 it costs more but adds solar power and phone-linked timekeeping; against a G-Shock square it is slimmer and easier to read at a glance thanks to the analog hands.

Best forEveryday wear with a rugged buildFans of the octagonal 2100 case shapeBuyers who want solar charging and no battery swapsPeople who want phone-linked time correction
Pros
  • Tough Solar charging reduces battery changes
  • Bluetooth time sync through the Casio Watches app
  • 200 m water resistance and shock-resistant case
  • Slimmer than many G-Shock models for its size
  • Analog hands plus digital display for quick reading
  • Carbon Core Guard case keeps weight down
Cons
  • Hands can obscure the small digital subdial
  • Negative LCD is hard to read in low light
  • Bluetooth and solar add cost over the base GA-2100
  • App pairing is needed for some settings

G-SHOCK アナログデジタル 2100シリーズ メンズ 腕時計 GA-B2100-1A prices at every store

  • BanzaiHobbyNew

    In stockShips from Japan · duties may applyReturn policy

    $139.69Checked Nov 9
    Visit BanzaiHobby

What reviewers say

Owners of the 2100 series praise the slim octagonal case, the light weight and the tough solar and Bluetooth features on this version. Common complaints are the small, dim digital display and hands that can cover it.

What people mention
  • LegibilityCriticisedOwners say the small negative LCD is hard to read, especially in low light, and the hands can cover it.
  • Solar chargingPraisedBuyers like that Tough Solar keeps the watch running without regular battery changes.
  • Bluetooth syncPraisedUsers value automatic time correction through the Casio Watches app, though some find pairing fiddly.
  • Size and weightPraisedReviewers call the 2100 case slim and light for a G-Shock and comfortable for daily wear.
  • BuildPraisedOwners describe the Carbon Core Guard case and 200 m water resistance as solid and durable.

About the G-SHOCK アナログデジタル 2100シリーズ メンズ 腕時計 GA-B2100-1A

ブランド: CASIO(カシオ)

アイテム部品番号: GA-B2100-1ADR

梱包サイズ: 3.9 x 3.9 x 3.9 inches

Questions and answers

How is the GA-B2100 different from the GA-2100?
The GA-B2100 adds Tough Solar charging and Bluetooth pairing with the Casio Watches app. The case shape and analog-digital layout are the same.
Does it need a battery change?
It runs on Tough Solar, charging from light through the dial. A rechargeable cell still ages over years, but routine battery swaps are not needed.
Can I use it for swimming?
Yes. It is rated to 200 m water resistance, which covers swimming and snorkeling. It is not a dive computer.
Do I have to use the phone app?
No, the watch works on its own. The app adds automatic time sync and easier access to settings such as alarms and world time.
How does it compare with a square G-Shock?
The 2100 case is slimmer and the analog hands read quickly, while square models like the GW-M5610 have a larger, clearer digital display.
What is in the box?
The watch, a user manual and the usual G-Shock packaging. No charging cable is needed because it charges from light.
Where is the G-SHOCK アナログデジタル 2100シリーズ メンズ 腕時計 GA-B2100-1A cheapest?
At BanzaiHobby, for $139.69, as of our latest check.

More from Casio

  • C
    Casio GA-2100BM-7A8
    Casio GA-2100BM-7A8
  • C
    Casio G-Shock Bluetooth Solar Analog Digital Dial All Black Men Watch GA-B2100-1A1JF
    Casio G-Shock Bluetooth Solar Analog Digital Dial All Black Men Watch GA-B2100-1A1JF
  • C
    Casio G-Shock GA-B2100 FC-1ADR CasiOak Solar Bluetooth Blue
    Casio G-Shock GA-B2100 FC-1ADR CasiOak Solar Bluetooth Blue
  • C
    Casio GAB2100BEG-1A
    Casio GAB2100BEG-1A
  • C
    Casio G-Shock GA-B2100 LUU-5ADR CasiOak Solar Bluetooth Matte Grey
    Casio G-Shock GA-B2100 LUU-5ADR CasiOak Solar Bluetooth Matte Grey
  • C
    Casio G-Shock Analog-Digital Black GA-B2100-1APR
Casio G-Shock Analog-Digital Black GA-B2100-1APR
  • C
    Casio G-Shock GA-2100GB-1AER
    Casio G-Shock GA-2100GB-1AER
  • C
    Casio G-Shock Resin Black Digital Quartz Watch 45mm 20atm
    Casio G-Shock Resin Black Digital Quartz Watch 45mm 20atm
  • All Casio deals and products →

    More men's analog watches

    • C
      Casio Analog GA-B2100C-9AER
      Casio Analog GA-B2100C-9AER
    • C
      Casio MTP-1370D-1A2
      Casio MTP-1370D-1A2
    • C
      Casio G-Shock 2100 Series Analog-Digital 'Black' GA-2100-1A1
      Casio G-Shock 2100 Series Analog-Digital 'Black' GA-2100-1A1
    • C
      Casio Quartz Analog MTP-V001D-7B Men's Watch
      Casio Quartz Analog MTP-V001D-7B Men's Watch
    • C
      Casio Men's MTPV002GL-7B2 Gold Leather Japanese Quartz Fashion Watch
      Casio Men's MTPV002GL-7B2 Gold Leather Japanese Quartz Fashion Watch
    • C
      Casio Men's Analog-Digital Black Dial Black Resin Watch AW48HE-1A
      Casio Men's Analog-Digital Black Dial Black Resin Watch AW48HE-1A
    • C
      Casio Brown Prtb70-5 Watch
      Casio Brown Prtb70-5 Watch
    • C
      Casio Standard Analog Stainless Steel Blue Dial Quartz MTD-135D-2AV Men's Watch
      Casio Standard Analog Stainless Steel Blue Dial Quartz MTD-135D-2AV Men's Watch