Since its release in 1983, the toughness watch G-SHOCK, which continues to evolve in search of insatiable strength, is a model that adopts the popular black and gold colors based on the metal covered series. Adopting a metal bezel with gold IP on a black base, it has a gorgeous design that can be used widely as a fashion item. The base model is the octagon bezel GM-2100. With popular colors such as black and gold, it has a cool design that can be used in a wide range of situations.

The latest addition to the G-SHOCK line of shock-resistant watches. The new GM-2100 is based on the GA-2100, which is popular for its octagonal shape and streamlined design, but now incorporates a metal bezel for an even more stylish look.

Released in 2019, the base-model GA-2100 inherited the concept of the DW-5000C, the very first G-SHOCK, but was a digital-analog combination model with a slim profile and streamlined design. With its distinct octagonal shape and straightforward design, the GA-2100 has been a popular choice worldwide, particularly among young people.

The new GM-2100 retains the streamlined form and slim profile of the GA-2100, but adds a new forged metal bezel to give the watch a sharper look. A round hairline finish is applied to the top surface of the bezel and a mirror polish to the sides, giving it a beautiful metallic gleam. Options with blue-gray IP (GM-2100N) and dark gray IP (GM-2100B) bezels are available, to suit any smart style. The dials are treated with a vapor deposition finish in new navy blue, green, and red hues to achieve appealing metallic color schemes. The watch band employs a square dot texture with incremental variations in dot size, resulting in a sharp look to match the face design.

Octagonal form

The octagonal design motif maintained since the very first G-SHOCK is now available in stainless steel. Forging and round hairline finishes applied to the top surface give the watch a sophisticated textural look. The elimination of all engraving other than lettering at the top and bottom makes for a solid design.

Face design

The intricately shaped dial paired with the mirrored index gives the watch face a sense of depth. The design accent of a sawn line finish applied at the 9 o’clock position creates a simple yet powerful appearance.

Ion plating colours

Colour variations are offered with pink gold IP (GM-S2100PG) and dark gray IP (GM-S2100B) applied to the metal components. This single-tone style gives the dial a sense of consistency and minimalist flair.

Slim, compact

The watch features a shock-resistant structure with its metal bezel and glass fibre-reinforced resin case. Enhanced material strength enabled further slimming of the exterior while still satisfying the G-SHOCK criteria for shock resistance to achieve a mid-sized form that makes coordinating easy.

Band design

Featuring a simple design with a relatively even surface, the band nicely complements the texture of the metal case. Made with urethane for a comfortable fit, the band comes in black, grey or khaki matching the colour of the case.


Shock Resistant

Shock-resistant construction protects against impact and vibration.

  • 200M Water Resistant

  • Full Auto Super LED


  • 5 Alarms

  • 1/100 Stopwatch


  • Countdown Timer


  • Full auto Calendar

  • World Time

    (31TZ, 48Cities+UTC)

  • Hand Retract Function

  • Case

    Gold IP Case.
    The case and bezel have mirror finishes that enhance the texture of the metal.

  • Case: Gold IP Mirror finish/ Stainless steel
  • Bezel: Hairline finish
  • Resin Band
  • Neobrite
  • Shock Resistant
  • Mineral Glass
  • Dark gray ion plated bezel
  • 200-meter water resistance
  • Double LED light
    LED light for the face (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
    LED backlight for the digital display (Super illuminator, selectable illumination duration (1.5 seconds or 3 seconds), afterglow)
  • Hand shift feature (Hands move out of the way to provide an unobstructed view of digital display contents)
  • World time
    31 time zones (48 cities + coordinated universal time), city code display, city name display, daylight saving on/off, auto summer time (DST) switching
  • 1/100-second stopwatch
    Measuring capacity: 00’00”00~59’59”99 (for the first 60 minutes)
    1:00’00~23:59’59 (after 60 minutes)
    Measuring unit: 1/100 second (for the first 60 minutes)
    1 second (after 60 minutes)
    Measuring modes: Elapsed time, split time
  • Countdown timer
    Measuring unit: 1 second
    Countdown range: 24 hours
    Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments)
  • 5 daily alarms
  • Hourly time signal
  • Full auto-calendar (to year 2099)
  • 12/24-hour format
  • Button operation tone on/off
  • Regular timekeeping
    Analog: 2 hands (Hour, minute (hand moves every 20 seconds))
    Digital: Hour, minute, second, pm, month, date, day
  • Accuracy: ±15 seconds per month
  • Approx. battery life: 3 years on CR1025
  • Size of case: 45.9×40.4×11mm
  • Total weight : 55g
  • Module No. 5663
  • UPC: 889232327051

Operation Guide (PDF)
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