Casio Master of G - Gravity Master [GWR-B3000-1ADR]

Reach new heights and break new barriers with a GRAVITYMASTER inspired by the exhilarating speed of supersonic jets. From the G-SHOCK MASTER OF G line of timepieces that deliver peak performance for professionals facing punishing conditions on land, in the sea, or in the sky — this timepiece combines durability and functionality to meet the demands of rigorous aerial missions. 

Employing a dual hollow case structure, the advanced TOUGH MVT.2 movement, and outstanding readability, the GWR-B3000 ensures the precision timekeeping required for professional missions flown from the most demanding cockpit situations. 

Topology analysis of spatial relationships is used to optimize the exceptionally rugged GRAVITYMASTER design for Triple G Resist. The Triple G Resist structure enhances the watch’s ability to withstand shock, centrifugal force, and vibration, with these previously independent functions now working interdependently within a dual hollow structure.  

The dual hollow structure features an outer case enveloping the center case and supporting it at separate four points, making the center case appear to float. The outer case is constructed of multiple components finished with metal injection molding (MIM), incorporating resin buffering components, as well. The shock absorbers that protect the center case are left visible, creating a design of complex and intricate structural beauty. 

Developed in pursuit of ultimate precision, reliability, and practicality, the Tough Movement solar-powered analog movement has now evolved to become the TOUGH MVT.2, featuring advanced self-regulating control that withstands external disturbances. Tough Solar power ensures the stable operation of auto time adjustment and auto hand home position correction. In addition to hybrid mount construction for outstanding durability, TOUGH MVT.2 newly incorporates a function for detecting shocks, magnetic fields and other external disturbances that affect the accuracy of the time display.  

When the watch detects a strong impact, the auto hand home position correction function immediately repositions the hands to the proper setting. Similarly, if a strong external magnetic field is detected, the hands temporarily stop moving and automatically return to the correct position once the magnetic field disappears. 

A newly developed dark black dial features microfabricated surface textures to diffuse light and reduce reflection, boosting contrast and ensuring clear visibility in any environment. Combined with an in-dial solar system — inset dial solar panels that capture enough light to power the watch — the result is a dial color with rich depth. 

Scratch-resistant, highly transparent sapphire crystal enhances clarity, and environmentally friendly bio-based resin for the band and center case help reduce environmental impact. 

The innovative tough style delivers full-on practical functionality, as well. Download the CASIO WATCHES app and pair with your smartphone via Bluetooth® for automatic time correction and access to flight logs. All of this, together with high-intensity LED light, direct access to UTC (Coordinated Universal Time), and other extremely practical functions, earn this supersonic GRAVITYMASTER a worthy place among the MASTER OF G family of full-fledged pilot’s watches.

Dimensions & Build

Case size (L × W × H): 56.7 × 47.3 × 14.1 mm
Weight: 102 g
Case and bezel material: Bio-based Carbon / Stainless steel
Band: Soft urethane band (Bio-based resin)
Compatible band size: 145 to 215 mm
Construction: Shock Resistant; TRIPLE G RESIST (Shock resistant, Centrifugal force resistant, Vibration resistant); Carbon Core Guard structure
Water resistance: 200-meter water resistance

Time Adjustment

Radio-controlled watch: Multi band 6
Bluetooth: Connects to a smartphone and automatically adjusts the time

Power & Battery

Power supply: Tough Solar (Solar powered)

Smartphone Link / App Connectivity

Smartphone Link feature: Mobile link (Wireless linking using Bluetooth®)
App: CASIO WATCHES
App connectivity features: Auto time adjustment, Easy watch setting, Approximately 300 world time cities, Flight log, Phone finder

Exterior

Glass: Spherical Glass; Sapphire crystal with anti-reflective coating
Crown: Screw Lock Crown
Other: Neobrite

World Time

World time: 38 time zones (26 cities*, auto summer time (DST) switching)
UTC time display: Yes
Home city swapping: Yes
One-touch UTC display: Yes
Note: *Subject to updates by connection between the watch and a phone.

Stop Watch

Stopwatch: 1-second stopwatch
Measuring capacity: 23:59'59

Timer

Timer: Countdown timer
Measuring unit: 1 second
Countdown range: 24 hours
Countdown start time setting range: 1 minute to 24 hours (1-second increments)

Alarm

Daily alarm: Yes

Light

LED light: Super Illuminator, afterglow
Light color: White

Calendar

Calendar: Full auto-calendar (to year 2099)
Day indicator: Yes
Date display: Yes

Hand Home Position Correction

Auto hand home position correction: With Shock Detection

Energy Saving

Power Saving: Hands stop to save power when the watch is left in the dark

Battery Display / Alert

Battery level indicator: Yes

Run Time

Approx. battery operating time: 5 months on rechargeable battery (operation period with normal use without exposure to light after charge)
Approx. battery operating time with Power Saving: 22 months on rechargeable battery (operation period when stored in total darkness with the Power Saving function on after full charge)

Timekeeping & Accuracy

Accuracy: ±15 seconds per month (with no signal calibration and mobile link function)

Regular timekeeping:

• Analog: 3 hands (hour, minute; hand moves every 10 seconds, second)

• Dials: 3 dials (dual time hour and minute, dual time 24-hour, day)

Magnetic field detection: Yes

Time Calibration

Time calibration signal reception:

• Auto receive up to six* times a day (remaining auto receives canceled as soon as one is successful)

• Manual receive

• Latest signal reception results

Note: *5 times a day for the Chinese calibration signal

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 (Fukushima) / 60.0 kHz (Fukuoka/Saga)

• BPC: Shangqiu City, Henan Province, China — 68.5 kHz