Introduction

Casio’s “Master of G” line of watches take classic G-Shock bullet-proof construction and combines that with specialized features designed for outdoor professionals.

This guide will cover the 6 most popular in-production model families:

• 

  Gulfmaster

  For Navigating Rough Seas

• 

  Rangeman

  For Traversing Varied Terrain

• 

  Frogman

  For Professional Divers

• 

  Mudman

  The Versatile Outdoor Watch

• 

  Mudmaster

  For Tactical Land Operations

• 

  Gravitymaster

  For Professional Pilots and Travelers

When comparing G-shock “Master of G” watches, keep in mind that almost all of them have the basic Casio module functions: Alarms, Timer, Stopwatch, Shock Resistance, Water Resistance, Backlight Illumination and World Time.

All prices in this guide reflect real-time market prices, updated every 60 minutes.

Capabilities Chart

Casio Gulfmaster

The Casio Gulfmaster is Casio’s seafaring entry in the legendary “Master of G” Series, focused on delivering features for those that work on boats. The Gulfmaster series currently has three modern variations: the Quad Sensor, the Triple Sensor and the Dual Sensor models.

All three variations utilize a combination of digital and analog displays, as well as Barometric and Temperature sensors and a module for displaying tide levels and moon phases.

 

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• Quad Sensor Models
• Triple Sensor Models
• Twin Sensor Models

Casio Rangeman

The Rangeman is Casio’s all-purpose watch for use on land, featuring helpful functions for navigating various terrain (Compass, Altimeter and Thermometer). The Rangeman has a single functional model that comes in many different color combinations – with some limited edition models commanding quite a premium price.

The Rangeman is a very popular model due to it’s relative affordability and versatility. Additionally, the metal buttons give it a unique look that makes them stand out from the other G-Shocks.

 

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• Standard Editions
• Limited Editions

Casio Frogman

First released in 1993, The Frogman is one of Casio’s most successful and longest running digital watches. All G-Shock watches are water resistant up to 200M, but the Frogman takes it further with complete ISO 64250-compliance. With it’s multitude of dive specific features (like Dive logging, depth gauge, and rapid ascent alarms), this watch is one of the most capable dive watches you can buy.

For real divers, it’s makes a lot more sense to utilize a Frogman in-lieu of a mechanical dive watch. Outside of the bevy of useful dive features, it’s also a lot more durable than your traditional mechanical dive watch and won’t fail on you when in potentially life-threatening situations.

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• Depth Gauge Models
• Standard Frogmen
• Limited Editions

Casio Mudman

The Mudman is Casio’s all digital, entry level “Master of G” watch. Being the most affordable of the line, they represent a great value for collectors looking to acquire their first G-Shock. Known for it’s unique mud-resistant construction, the Mudman is a versatile watch for almost any outdoor use.

The current Mudman is available in three variations: The GW-9300 utilizes the twin sensor module and the Multiband 6 time sync, and the G-9300’s are practically identical (minus the Multiband feature). The G-9000 is a very basic watch, lacking almost all of the advanced features of the other models in the line.

 

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• Multiband 6
• Tough Solar
• Basic

Casio Mudmaster

The Mudmaster is a more advanced version of the Mudman, featuring a unique Analog/Digital display and some advanced design features: including a Sapphire Crystal and the usage of Alpha Gel to protect internal components.

The Mudmaster also has two variations: a Triple Sensor and Dual Sensor version. The Dual Sensor version is more affordable, but lacks many of the features of the other models.

 

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• Twin Sensor Mudmaster
• Triple Sensor Mudmaster

Casio Gravitymaster

The Gravitymaster is one of the newest model lines in the “Master of G” series. The GPW-1000 line has full GPS capabilities, allowing for automatic time synchronization worldwide. It features some useful aviator features, including dual world time, directional compass, and 24 hour chronograph.

The Flyback chronograph models allow for resetting of the chronograph without first needing to stop it, a simple timesaving feature that is useful for pilots.

 

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• GPS Hybrid Wave Ceptor
• World Time Dual Sensor Models
• Flyback Models

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