Casio G-Shock Master of G Gravitymaster GWR-B3000-1AER

Designed for the most demanding aerial missions, this timepiece combines extreme durability, precision, and advanced technology. The Triple G Resist structure protects against shock, vibration, and centrifugal force, while the unique dual hollow case offers high robustness and a technical, sophisticated design.

The TOUGH MVT.2 Tough Solar movement detects shocks and magnetic interference, automatically correcting hand positions to maintain maximum precision. Sapphire glass, a high-contrast dial, and LED light ensure excellent readability.

Thanks to Bluetooth® connectivity and the CASIO WATCHES app, automatic time synchronization and access to the flight log are possible. Direct access to UTC and the use of bio-based resin for the center case and strap complete the features.

Technical Specifications

Basic Information

Case size: 56.7 × 47.3 × 14.1 mm
Weight: 102 g
Case and bezel material: Bio-based carbon and stainless steel
Strap: Soft urethane, bio-based resin
Structure: Shock-resistant
TRIPLE G RESIST: Shock, centrifugal force, and vibration resistance
Structure: Carbon Core Guard
Water resistance: 20 bar (200 meters)
Time adjustment: Multi Band 6 radio-controlled watch and automatic time adjustment via Bluetooth® and smartphone
Power supply: Tough Solar (solar powered)

Smartphone Connectivity and App

Connection: Mobile Link via Bluetooth®
App: CASIO WATCHES
App functions: Automatic watch adjustment, easy watch setting, world time for approximately 300 cities, flight log, phone finder function

Exterior

Glass: Spherical sapphire glass with anti-reflective coating
Crown: Screw-lock
Adjustable band: 145 to 215 mm
Luminescence: Neobrite

World Time

World time: 38 time zones, 26 cities, automatic daylight saving time switching
Functions: UTC time display, home city swapping, and one-touch UTC display
Updates: Available cities can be updated via the watch and smartphone connection.

Stopwatch

Measuring unit: 1 second
Measuring capacity: 23:59'59"

Timer

Type: Countdown
Measuring unit: 1 second
Range: 24 hours
Start time setting: 1 minute to 24 hours, in 1-second increments

Reminder and Hourly Signal

Sound reminder: Daily sound reminder

Illumination

Type: Super Illuminator LED light
LED color: White

Calendar

Type: Full auto-calendar until the year 2099

Hand Position Correction

Function: Automatic correction of the home position of hour and minute hands

Power Saving

Function: Hands stop when the watch is left in the dark, reducing power consumption.

Battery Status

Indicator: Battery level indicator

Battery Life

Normal use: Approximately 5 months on a rechargeable battery, without further exposure to light after charging
Power saving: Approximately 22 months on a rechargeable battery if stored in total darkness with power-saving function enabled after a full charge

Accuracy

Accuracy: ±15 seconds per month, without signal calibration and Mobile Link function

Indications

Analog display: 3 hands for hours, minutes, and seconds, with the minute hand moving every 10 seconds
Second time indication: Hours and minutes, 24 hours
Calendar: Day of the month
Date: Date display
Detection: Magnetic field detection

Time Adjustment and Radio Control

Automatic reception: Up to 6 times a day; 5 times a day for the Chinese calibration signal. Remaining automatic receptions are canceled when one reception is successful.
Manual reception: Available
Memory: Display of the most recent signal reception results

Time Calibration Signals

DCF77: Mainflingen, Germany — 77.5 kHz
MSF: Anthorn, England — 60.0 kHz
WWVB: Fort Collins, United States — 60.0 kHz
JJY: Fukushima, Fukuoka/Saga, Japan — 40.0 kHz / 60.0 kHz
BPC: Shangqiu City, Henan Province, China — 68.5 kHz