Casio G-Shock Master of G Gravitymaster GWR-B3000B-8AER

Designed for the most demanding aerial missions, it combines extreme durability, precision, and advanced functionalities. The Triple G Resist structure protects against shock, vibration, and centrifugal force, while the distinctive dual hollow case, with a suspended and cushioned central case, ensures robustness and a unique technical design.

The TOUGH MVT.2 Tough Solar movement offers high precision and automatically detects shocks, magnetic fields, and other interferences, correcting hand positions when necessary. The high-contrast micro-textured dial, sapphire crystal, and LED light ensure excellent readability.

Bluetooth® connectivity with the CASIO WATCHES app allows for automatic time synchronization and access to the flight log. Other features include direct access to UTC and the use of bio-based resin for the central case and strap.

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: Resistant to shock, centrifugal force, and vibration
Structure: Carbon Core Guard
Water resistance: 20 bar (200 meters)
Time adjustment: Multi Band 6 radio-controlled watch; Bluetooth® with smartphone connection and automatic time adjustment
Power supply: Tough Solar (solar powered)

Smartphone Link/App Connectivity

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

Exterior

Glass: Spherical sapphire glass with anti-reflective coating
Crown: Screw-lock crown
Surface treatment: Gray ion-plated bezel
Adjustable strap: 145 to 215 mm
Luminescence: Neobrite

World Time

World time: 38 time zones, 26 cities, with automatic daylight saving time switching
Functions: UTC time display, home city swapping, one-touch UTC display
City update: Via watch-to-smartphone connection

Stopwatch

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

Timer

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

Alarm / Hourly Time Signal

Function: Daily alarm

Illumination

Type: Super Illuminator LED light
LED color: White

Calendar

Type: Full auto-calendar up to the year 2099

Hand Home Position Correction

Function: Automatic correction of hour and minute hand home positions

Power Saving

Function: Hands stop to save power when the watch is left in the dark.

Battery Status

Indicator: Battery level indicator

Battery Life

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

Accuracy

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

Other Features

Time display: Analog with 3 hands: hour, minute, and second
Minute hand: Moves every 10 seconds
Second time display: 3 dials for hour and minute of second time display, 24 hours of second time display, and day of the month
Date: Date display
Detection: Magnetic field detection

Time Adjustment

Automatic signal reception: Up to 6 times a day; up to 5 times a day for the Chinese calibration signal. Remaining automatic receptions are cancelled when the operation is successful.
Manual reception: Available
Reception results: Display of the latest signal reception results

Time Calibration Signals

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