Smartphone connectivity/app connectivity features
Smartphone connectivity feature
Mobile link (wireless link using Bluetooth®)
Applications
CASIO WATCHES
App Connectivity Feature
Automatic time setting
Easy watch setup
World time for about 300 cities
Trip log
Phone Finder
Basic information
Frame size (length x width x height)
59 × 54.7 × 15.7 mm
the weight
71 g
Frame and body material
Bio-carbon/Bio-resin
Belt
Bio Resin Bracelet
Structure
Shock resistance
Carbon Infrastructure Protection
Water resistance
Water resistance up to 200 meters
Set time
Bluetooth: The model connects to smartphones and adjusts the time automatically.
Power source and battery life
Tough Solar
Exoskeleton
Glass
Mineral glass
The crown
Screw-lock crown
Compatible belt size
145 to 215 mm
Other
Neobrite
Watch Features
UTC
Dual time (switch to local city time)
stopwatch
1-second stopwatch Measuring capacity: 23:59'59 Measuring modes: elapsed time, split time
temporary
Countdown Timer Unit of measurement: 1 second Countdown range: 24 hours Countdown start time setting range: 1 minute to 24 hours (1-minute increments and 1-hour increments)
Alarm/Hourly Time Signal
Daily alarm
Light
LED (High Power LED) Twilight
color of light
LED Light: White
calendar
Fully automatic calendar (up to year 2099)
Energy saving feature
Energy saving (Hands stop to save energy when the watch is left in a dark place)
Display/alert battery level
Battery level indicator
Runtime
Approximate battery operating time: 5 months for rechargeable battery (operation period with normal use without exposure to light after charging) 18 months for rechargeable battery (operation period when stored in a completely dark place with the power saving feature on after fully charged)
Accuracy
Accuracy: ±15 seconds per month (without mobile link function)
Other features
Date display screen
Today's Index
Regular timekeeping: Analog: 3 hands (hours, minutes (hand moves every 10 seconds), seconds), 3 dials (hours, minutes for dual time, dual time in 24-hour format, day)
Nothing is impossible! Introducing the GRAVITYMASTER GR-B300, a piece from the G-SHOCK MASTER of G lineup inspired by professional aviation equipment and designed to perform in even the harshest environments. Featuring a carbon core guard structure, the GR-B300 offers the shock resistance, durability and corrosion resistance of carbon material used in aircraft structures. The carbon fiber-reinforced resin case and smooth bezel design inspired by next-generation aircraft come together in a bold and powerful form. Imagine the world through a pilot’s eyes with a flight log memory function to record current location and time, plus a dual time function that displays the time in two time zones simultaneously. Additionally, simply tap the app to instantly switch between home and local time, a practical function that makes traveling abroad even smoother. The large, dimensional index markers and metal bezel that accentuate the large watch face are effective, enhancing the vision that is so important to pilots whose jobs require easy reading of the time. The rotating bezel at 9 o’clock uses a dual-coil motor to ensure smooth rotation and beautiful performance. The pointer not only rotates to display the on/off of the alarm and stopwatch, but also serves as a battery level indicator. The high-contrast black and white color scheme, punctuated with colorful accents on the dial and buttons, echoes the look of a cockpit instrument panel, while darker tones express the practical functions of the aviation world. The primary resin components used in the case, bezel and bracelet are made using bio-resin, a material expected to help reduce environmental impact.
