How to choose a G-Shock: the series explained
People buy G-Shock watches for exercise, work or simply because they look good. The choice is large, though, and model codes such as GA-2100, DW-5600 or GMW-B5000 do not reveal much at first glance. This guide explains the main G-Shock series, how they differ and how to find the right one for you.
What do all G-Shocks have in common?
Every G-Shock is built to withstand impacts. The case protects the movement against drops and shocks, and most models have 20 ATM water resistance (marked 200 m). This number indicates test pressure, not permitted diving depth, but these watches are well suited to swimming and snorkelling. Check the model’s manual for exact limitations. Most models also have a backlight, stopwatch, countdown timer and alarm.
DW-5600 – the square classic
The DW-5600 has G-Shock’s most recognisable shape: a square digital watch based on the first G-Shock, released in 1983. Lightweight, simple and reliable. It suits those who want a timeless, practical watch without unnecessary extras. The series has many colour variants and special editions.
GA-2100 – octagonal and slim
The GA-2100 is one of the most popular G-Shocks of recent years. An octagonal case, analogue and digital displays together, and Carbon Core Guard construction: the carbon-fibre-reinforced case keeps the watch slim (11.8 mm) and light (around 51 g). It is well suited to everyday wear as well as sports. It has world time, a stopwatch, countdown timer and five alarms.
If you want the same shape with solar power and phone connectivity, see the GA-B2100 series. The metal-bezel version is the GM-2100.
Metal G-Shocks: GM, GMW and G-Steel
If a resin case feels too sporty, metal versions are available. GM-series watches have a metal bezel, the GMW-B5000 is an all-metal square classic, and G-Steel (GST) combines steel and resin. They are heavier, but look dressier and also suit the office. Many metal models have solar power and Bluetooth, which sets the time from your phone.
Master of G: Mudmaster and Rangeman
These are designed for outdoor conditions. Mudmaster is built to withstand mud and dust. Rangeman, such as the GW-9400, is for hikers: it has a compass, barometer, altimeter and thermometer, solar power and radio-controlled time synchronisation. If you spend a lot of time in forests, mountains or at sea, this series is worth considering.
G-Shock for women
More compact models, such as the GM-S2110 and GMA-P2100, are available for smaller wrists. Durability is the same, but the case is smaller and thinner.
Comparing the series
| Series | Shape and display | Case | Power and time synchronisation | Suitable for |
|---|---|---|---|---|
| DW-5600 | square, digital | resin | battery; for light-powered and radio-synchronised models, see the separate GW series, such as the GW-M5610 | everyday wear and sports |
| GA-2100 / GA-B2100 | octagonal, analogue-digital | carbon-fibre-reinforced resin | GA-2100: battery; GA-B2100: solar power and Bluetooth | lightweight everyday wear |
| GM, GMW-B5000, G-Steel | metal bezel or all-metal | metal or metal + resin | often solar power; some models have Bluetooth | dressier wear |
| Mudmaster, Rangeman | large outdoor watch | resin, protected construction | often solar power; some with radio-controlled time synchronisation or Bluetooth | hiking and outdoor work |
| GM-S2110, GMA-P2100 | compact, analogue-digital | resin or metal bezel | depends on the model | smaller wrists |
How to choose
- For lightweight everyday wear:GA-2100 or DW-5600.
- For a dressier look:GM-2100, G-Steel or GMW-B5000.
- For fewer battery changes: choose a solar-powered model (Casio calls this Tough Solar). The product page lists this as ‘Movement: Solar’.
- For automatic time synchronisation: A Bluetooth model sets the time from your phone, while a radio-controlled model uses a time signal when available. Automatic switching between summer and winter time depends on the model, settings and successful synchronisation.
- For hiking and outdoor work:Rangeman or Mudmaster.
- For a smaller wrist:GM-S2110 or GMA-P2100.
Before buying, also check choosing a watch size and strap length and the differences between quartz, automatic and solar power. Read about G-Shock’s origins and durable construction in our G-Shock history article.
All our watches are genuine products with a 2-year warranty and a 14-day right of return. Explore the range: Casio watches. If you are deciding between two models, email us at info@kaekellad.ee and we will help you choose.