G-Shock Watches

About G-Shock Watches

Browse G-Shock in Australia — CasiOak, Master of G, Full Metal, and classic squares. 200m water-resistant, shock-proof, and built to survive. Authorised retailer with free shipping. Order before 2pm on a weekday and in-stock watches usually ship the same day.

Browse G-Shock by Series

CasiOak (GA2100 Series) — The modern classic. The GA2100-1A1 took off because it combines G-Shock toughness with a slim, wearable profile inspired by the Audemars Piguet Royal Oak. Carbon core guard construction keeps it light. The GAB2100 adds Tough Solar power and Bluetooth connectivity — the version to get if you want a set-and-forget watch.

Octagonal bezel design
Carbon core guard structure
48.5mm case with ultra-slim 11.8mm profile

G-Shock Squares (5600 Series) — The original design, unchanged since 1983. The DW5600 is the purest expression of G-Shock — resin case, digital display, indestructible. Solar-powered versions (GWM5610) add atomic timekeeping so you never have to set the time.

Original 1983 square silhouette
World time and countdown timer
Solar-powered variants available

Master of G — The professional line, split into three families: Mudmaster (Land), Gulfmaster (Sea), and Gravitymaster (Air). These are spec'd for extreme conditions — triple sensors, mud resistance, carbon fibre cases, sapphire crystals. Overkill for most people, exactly right for those who need them.

Purpose-built for extreme environments
Includes Mudmaster, Frogman and Rangeman
200m+ water resistance on diving models

G-Shock Full Metal — The premium tier. Stainless steel and titanium cases with the same G-Shock architecture underneath. The GMW-B5000 takes the original square design and builds it in metal — more refined, still just as tough.

All-metal construction over resin core
Sapphire crystal glass
Dress-ready with G-Shock toughness

G-Shock Classic (G7900, GA100, GA700) — Larger analog-digital models with tide graphs, world time, and countdown timers. The G7900 is the surf and rescue watch; the GA100 adds magnetic resistance and an analog dial.

Oversized analog-digital displays
Bold colourway range
Budget entry into the G-Shock range

What to Consider When Buying a G-Shock

Size and profile: G-Shock cases range from the slim 11.8mm CasiOak to the chunky 18mm Master of G. If you want something wearable under a shirt cuff, the GA2100 or DW5600 are the right choices. If you want maximum spec, the Master of G line sacrifices wearability for function.

Most models 43–55mm lug-to-lug
Thickness 11–15mm
Lighter than they look due to resin case

Solar vs battery: Tough Solar models (GAB2100, GWM5610, all Master of G) charge from light and never need battery replacements. Standard models use batteries lasting 2–7 years. For a daily-wear or travel watch, solar is worth the small price premium.

Tough Solar charges via indoor and outdoor light
Battery models use CR2016 (2–3 year life)
Solar recommended for daily wear

Features: Basic G-Shocks offer world time, countdown timer, and stopwatch. Step up to the GA2100 series for Bluetooth syncing; the Master of G adds triple sensors (compass, altimeter/barometer, thermometer). Work out what you'll actually use before buying a heavily featured model.

Shock resistance (10m drop tested)
Water resistance 200m standard
Multi-band atomic timekeeping on premium models

Why Buy Your G-Shock from Watch Direct?

As an authorised G-Shock retailer trusted by Australians since 2011, every watch comes with a full Australian manufacturer's warranty and can be serviced through official Casio Australia channels. We stock G-Shock from entry-level digitals to Full Metal and Master of G models. Free shipping Australia-wide and Afterpay available. Order before 2pm on a weekday and in-stock watches usually ship the same day.

Frequently asked questions

What is the best G-Shock watch to buy in Australia?

For most people, the CasiOak GA2100 is the best all-rounder — slim, stylish, and tough. For solar power and connectivity, the GAB2100 is the upgrade. For purists, the GWM5610 solar square is the quintessential G-Shock.

Are G-Shock watches actually tough?

Yes. G-Shock was designed in 1981 to survive a 10-metre drop onto concrete. Modern G-Shocks exceed that by a wide margin — they're shock-resistant, 200m water-resistant, and have survived being run over by trucks in durability testing. The Master of G line adds mud and dust resistance for truly extreme environments.

What does CasiOak mean?

CasiOak is the nickname fans gave the GA2100 series because its octagonal bezel shape resembles the Audemars Piguet Royal Oak — a watch that costs 100x more. The name stuck, and Casio has leaned into it.

Do G-Shock watches need batteries?

Standard G-Shock models use batteries that last 2–7 years depending on features. Tough Solar models (like the GAB2100, GWM5610, and all Master of G) charge from light and never need battery replacements. The rechargeable cell lasts 10+ years.

What is the difference between G-Shock and Baby-G?

Baby-G is the compact version of G-Shock, originally designed for women but worn by anyone wanting smaller dimensions. Same shock resistance, same durability, smaller cases. Browse the Baby-G range for options.

Can I swim with a G-Shock?

Yes. All G-Shock watches are rated to 200m water resistance. They're suitable for swimming, surfing, diving, and snorkelling. The Gulfmaster (Master of G Sea) line adds tide graphs and dive-specific features.

Where can I buy an authentic G-Shock in Australia?

Watch Direct is an authorised Casio retailer, so every G-Shock we sell is genuine and covered by the full Australian manufacturer's warranty. We ship Australia-wide. Order before 2pm on a weekday and in-stock watches usually ship the same day. You can also visit our Sydney showroom at Marrickville to try them in person.