G-SHOCK GRAVITYMASTER, 45mm - GR-B300-8A2ER

Introducing a new addition to the G-SHOCK Master of G collection: the GRAVITYMASTER GR-B300, an aviation-inspired professional watch designed to perform even in the harshest environments.

The GR-B300 features a Carbon Core Guard structure that ensures maximum strength.
The carbon fiber-reinforced resin case and bezel design, inspired by next-generation aircraft, merge into a bold and powerful form.

See the world through a pilot's eyes with the flight log memory function, which records your current location and time, and the simultaneous display of time in two time zones. Simply tap the app to instantly switch between your home time zone and local time, a convenient and useful feature when traveling abroad.
The large indexes and steel bezel increase the size of the dial, ensuring better visibility, essential for pilots, whose work requires quick and intuitive reading of the time.
The black and white color combination evokes the look of a cockpit instrument panel.
The key resin components used for the case, bezel, and strap are made from bio-based resin, a material designed to help reduce environmental impact.

Specifications
Basic information
Case dimensions (H x W x D) 59 × 54.7 × 15.7 mm
Weight 71 g
Case and bezel material Carbon/Bio-based resin
Bio-based resin strap
Shock-resistant structure
Carbon Core Guard Structure
Water resistance Waterproof up to 20 bar
Setting the time
Bluetooth: Connects to a smartphone and automatically adjusts the time
Power and battery life
Tough Solar (solar-powered)
Smartphone and app connection function
Mobile Link (wireless connection via Bluetooth®)
CASIO WATCHES App
App connection function
Automatic clock adjustment
Easy clock setting
International time in about 300 cities
Flight log
Find phone

External
Mineral glass
Crown Screw-down crown
Adjustable strap From 145 to 215 mm
Various Neobrite

Watch Features
Second time zone time (city switching for home time zone time)
1-second stopwatch
Measuring capacity: 23:59'59.
Measurement mode: elapsed time, split time
Countdown timer
Unit of measurement: 1 second
Countdown interval: 24 hours
Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments)
Sound reminder / Time signal
Light LED Light (Super Illuminator)
Luminescence Light color
LED: white
Full automatic calendar (up to the year 2099)
Power saving function Power saving (the hands stop to save power when the watch is left in the dark)
Battery status display/warning
Battery level indicator
Race timing
Approximate battery operating time:
5 months with rechargeable battery (operating period for normal use without exposure to light after charging)
18 months with rechargeable battery (operating time when stored in total darkness with the power saving function activated after a full charge)
Accuracy: ±15 seconds per month (without Mobile Link function)

Other features
Date display
Regular time indication:
Analog: 3 hands (hour, minute (with hand moving every 10 seconds), second), 3 subdials (hour and minute second time display, 24-hour second time display, day of the month)