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Deal.ai › G-Shock › Mens Sport Watches
G-SHOCK
Casio G-Shock Men's Bluetooth Quartz Chronograph Watch GMB2100D-1A
G-SHOCK

Casio G-Shock Men's Bluetooth Quartz Chronograph Watch GMB2100D-1A

3.3(3 ratings)

Best price now

$488.24at WalmartChecked Nov 11

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Price facts

  • Last seen at $488.24 at Walmart on Nov 11.

Our take on the Casio G-Shock Men's Bluetooth Quartz Chronograph Watch GMB2100D-1A

The GMB2100D-1A is the full-metal version of the CasiOak: a stainless steel case and bracelet around a black dial, with the octagonal bezel that made the GA-2100 line popular. It keeps the G-Shock toughness — shock resistance and 200-meter water resistance — and adds Bluetooth so the watch syncs time with a phone, plus double LED light, world time across 38 cities, five daily alarms, a 1/100-second stopwatch and a countdown timer. At 44mm wide and 13mm thick it wears large but slim for a steel G-Shock. Against the resin GA-2100 it is heavier and dressier; against steel analog chronographs it offers more functions and far more abuse tolerance, though its mineral crystal and basic quartz movement are modest for the metal finish.

Best forBuyers who want G-Shock toughness in a steel watchFans of the octagonal CasiOak caseEveryday wear that can take knocks and waterTravelers who want phone-synced time and world time
Pros
  • Full stainless steel case and bracelet
  • Shock resistant and water resistant to 200 meters
  • Bluetooth time sync with a phone
  • Double LED light with lume on hands and markers
  • 38-city world time, five alarms, stopwatch and timer
  • Slim 13mm profile for a steel G-Shock
Cons
  • Mineral crystal rather than sapphire
  • Heavier than the resin GA-2100 it is based on
  • Analog hands and small subdial take learning to read
  • No solar charging

Casio G-Shock Men's Bluetooth Quartz Chronograph Watch GMB2100D-1A prices at every store

  • WalmartNew

    In stockSold by Inventory AdjustersReturns: Sold by a Walmart Marketplace seller; returns go to the seller under the seller's returns policy.

    $488.24Free shippingChecked Nov 11
    Visit Walmart

What reviewers say

Owners of the metal CasiOak line praise the steel build, the slim case and the blend of toughness with a dressier look. Common complaints are the mineral crystal, the weight compared with resin models, and a busy dial that takes getting used to.

What people mention
  • BuildPraisedOwners say the stainless steel case and bracelet feel solid and well finished.
  • CrystalCriticisedReviewers note the mineral crystal scratches more easily than sapphire.
  • WeightMixedSome find the steel version noticeably heavier than the resin GA-2100.
  • LegibilityMixedThe analog hands and small subdial take some getting used to for quick reading.
  • Time syncPraisedBluetooth pairing with a phone keeps the time accurate.

About the Casio G-Shock Men's Bluetooth Quartz Chronograph Watch GMB2100D-1A

It has a black dial and a brushed and polished stainless steel case and bracelet. The crystal is mineral, and the watch is shock resistant and water resistant to 200 meters.

It shows 38 time zones (38 cities plus coordinated universal time), with a city code display and a city name display. You can turn daylight saving on or off, and the watch switches to summer time automatically. Home city and world time city can be swapped.

Other functions include a double LED light, five daily alarms, an hourly time signal, a 1/100 second stopwatch, a countdown timer and a full auto calendar. The time can be shown in 12 or 24 hour format.

Model
GMB2100D-1A
Brand
G-Shock (Casio)
Movement
Quartz
Case and bracelet
Brushed and polished stainless steel
Dial
Black
Crystal
Mineral
Case diameter
44 mm
Case thickness
13 mm
Bracelet width
24 mm
Water resistance
200 meters
Shock resistance
Yes
World time
38 time zones (38 cities + UTC), city code and city name display, home city/world time city swap
Daylight saving
On/off setting, automatic summer time (DST) switching
Alarms

Specifications

color
BlackSource

Questions and answers

How is this different from the GA-2100?
It uses the same octagonal case shape but swaps resin for a stainless steel case and bracelet and adds Bluetooth time sync. It is heavier and dressier than the resin model.
Does it need a phone to work?
No. It runs as a normal quartz watch; Bluetooth only adds time sync and settings through the app.
Is it good for swimming?
Yes. It is water resistant to 200 meters, which covers swimming and snorkeling but not scuba diving.
What is in the box?
The watch, a bracelet sized for the case, and Casio's documentation. The bracelet uses standard pins, so a jeweler can adjust it.
Does it have a sapphire crystal?
No, it uses mineral crystal. That is the main spec gap against pricier steel watches.
How does the light work?
It has a double LED light that illuminates the dial and the digital display, with an auto-light option.
Where is the Casio G-Shock Men's Bluetooth Quartz Chronograph Watch GMB2100D-1A cheapest?
At Walmart, for $488.24, as of our latest check.
What do buyers say about the Casio G-Shock Men's Bluetooth Quartz Chronograph Watch GMB2100D-1A?
Rated 3.3 out of 5 from 3 ratings.

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