
Whatever you do, wherever you are, the G-SHOCK Master of G range gives you what you need.
Based on the GRAVITYMASTER, MUDMASTER and MUDMAN models, which offer maximum performance in tough conditions on the ground or in the air, this range features a black case that symbolizes toughness, with vivid emergency color accents that capture the world of professionals involved in rescue and other critical missions.
The sleek exterior design of the GRAVITYMASTER GR-B300EC reproduces an organic shape inspired by next-generation aircraft. The watch's carbon core protection structure and large 3D dial offer durability, legibility and a comfortable fit. Also enjoy all the practical functions, including dual time to view the time in two cities at the same time, a flight log memory function to record the route traveled and many more.
Specifications
Basic Information
Dimensions (L × W × H)
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59 × 54.7 × 15.7 mm
Weight
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71 g
Case and bezel material
Bio-based carbon/Bio-based resin/Stainless steel
Strap
Bio-based resin strap
Assembly
Shock Resistant
Carbon Core Guard structure
Water resistance
Water resistant to a depth of 20 bar
Time setting
Bluetooth: Connects to a smartphone and automatically adjusts the time
Power supply and battery life
Tough Solar (solar powered)
Smartphone Link functions / Application connectivity
Smartphone Link function
Mobile Link (Bluetooth® wireless link)
Applications
CASIO WATCHES
App Connectivity Function
Automatic time setting
Easy clock setting
World time for approximately 300 cities
Flight log
Phone finder
Exterior
Glass
Mineral Crystal
Crown
Screw-down crown
Surface treatment
Black ion plated bezel
Compatible band size
From 145 to 215 mm
Other
Neobrite
Watch functions
World time
Dual time (local city time change)
Stopwatch
1-second stopwatch
Measuring capacity: 23:59'59.
Measuring modes: Elapsed time and fractions of time
Timer
Countdown timer
Measuring unit: 1 second
Countdown interval: 24 hours
Countdown start time setting range: Between 1 minute and 24 hours (1 minute and 1 hour increments)
Alarm / time signal
Daily alarm
Illumination
LED light (super-illuminator)
Brightness
Light color
LED: white
Calendar
Full automatic calendar (up to the year 2099)
Power saving function
Power saving (hands stop to save power when the watch is left in the dark)
Battery display / alert
Battery level indicator
Run time
Approximate battery run time:
5 months with rechargeable battery (operating period with normal use without exposure to light after charging).
18 months with rechargeable battery (operating period when stored in total darkness with power saving function activated after full charge)
Accuracy
Accuracy: ±15 seconds per month (without Mobile Link function)
Other options
Date display
Date
Normal time display:
Analog: 3 hands (hour, minute (hand moves every 10 seconds) and second), 3 dials (dual time, 24-hour dual time and day).
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