









G-Shock
Master of G-Land Mudmaster Black Resin Band Watch
GRB300EC-1A
or 4 payments of $84.00
- Repay in 4 installments fortnightly, interest-free.
- The maximum purchase amount is $3,000.
- Learn more about Afterpay
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Master of G-Land Mudmaster Black Resin Band Watch
or 4 payments of $84.00
- Repay in 4 installments fortnightly, interest-free.
- The maximum purchase amount is $3,000.
- Learn more about Afterpay
Overview
- Case size
- 59 mm
- Movement
- Solar
- Functions
- Alarm
- Date display · World timer +3
Experience unparalleled durability and advanced functionality with the G-SHOCK Master of G-Land Mudmaster Black Resin Band Watch GRB300EC-1A.
Designed for men who demand reliability in extreme conditions, this men's watch integrates a rugged black resin band with a striking black case that showcases resilience and style. The innovative Carbon Core Guard structure ensures impressive shock resistance, while the wide 3D face enhances readability. Equipped with a solar movement for efficient power management, this watch features dual-time functionality, a flight log memory, and a robust 200 meters water resistance, making it an essential companion for the adventurous spirit. Embrace the blend of cutting-edge technology and rugged elegance that defines the Master of G series.
Specifications
- Weight
- 71 g
- Case and bezel material
- Bio-based Carbon / Bio-based resin / Stainless steel
- Band
- Bio-based resin band
- Construction
- Shock Resistant / Carbon Core Guard structure
- Case size (L× W× H)
- 59 × 54.7 × 15.7 mm
- Gender
- Male
- Time adjustment
- Bluetooth
- Connects to a smartphone and automatically adjusts the time
- Glass
- Mineral Glass
- Crown
- Screw Lock Crown
- Surface treatment
- Black ion plated bezel
- Compatible band size
- 145 to 215 mm
- Other
- Neobrite
- World time
- Dual time (Home City time swapping)
- Stopwatch
- Measuring capacity
- 23:59'59.
- Measuring modes
- Elapsed time, split time
- 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)
- Alarm/hourly time signal
- Daily alarm
- Light
- LED light (Super Illuminator) Afterglow
- Light color
- LED:White
- Calendar
- Full auto-calendar (to year 2099)
- Energy saving feature
- Power Saving (hands stop to save power when the watch is left in the dark)
- Battery display/alert
- Battery level indicator
- Approx. battery operating time
- Accuracy
- Accuracy: ±15 seconds per month (with no mobile link function)
- Other features
- Regular timekeeping
- Analog
- 3 hands (hour, minute (hand moves every 10 seconds), second), 3 dials (dual time hour and minute, dual time 24-hour, day)
Built not to break

A module that floats
Inside a hollow case, the module (the heart of the watch) seems to float, so knocks from outside are softened before they reach it. The idea came from watching children play with a rubber ball.
Tough Solar
A thin, film-like solar panel is fitted into the dial around the display, and it turns even weak light, such as from fluorescent lamps, into power.

2-year warranty
Every G-SHOCK watch from Watch Direct comes with a 2-year warranty from Shriro Australia, Casio’s exclusive Australian distributor.
Watch Direct is an authorised G-SHOCK retailer, trading since 2011.

About G-SHOCK

G-SHOCK began with a dropped watch. Casio designer Kikuo Ibe saw a watch break when it fell, and proposed “a durable watch that would not break even if dropped”. The project set itself the “Triple 10” goal: survive a 10-metre drop, resist water to 10 bar and run for 10 years on one battery. The first G-SHOCK, the DW-5000C, arrived in 1983.
Shop all G-SHOCK
Reviews
Shipping & Returns
Free Shipping Anywhere in Australia
- Get Your Order Shipped in Record Time - Most Orders Sent Within 24 Hours!
- Efficient Same Day Delivery in Sydney - Calculated at Checkout
- Signature on Delivery is included on all shipments within Australia.
- DHL Express is available for fast and secure international shipments.
View our Shipping Page for More Information
Returns Policy
You have 30 days from the date of purchase to return your item.
To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase.
View our Returns Page for More Information


