G-Shock Watches
G-Shock Watches
Browse the full G-Shock range in Australia — CasiOak, Master of G, Full Metal, and classic squares. 200m water-resistant, shock-proof, and built to survive. Authorised retailer, free shipping, same-day dispatch.
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 the complete G-Shock range — from entry-level digitals to limited-edition Full Metal releases. Free shipping Australia-wide, same-day dispatch on in-stock items, and Afterpay available.
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 with same-day dispatch on in-stock models. You can also visit our Sydney showroom at Marrickville to try them in person.
Shopping for a man? Browse the full Men's Watches collection — 1,400+ styles from G-Shock and Australia's top watch brands, with free shipping and full manufacturer warranty.