GR-B300-1A4ER

The GR-B300 features a carbon core protection structure that provides rigidity and shock resistance, and prevents the material from corroding because it is made from the same carbon material used in aircraft fuselages. The carbon fibre-reinforced resin case and the refined bezel design inspired by the new generation of aircraft combine in a striking and powerful way. 

See the world through the eyes of a pilot with the flight log memory function to record location and time, as well as dual time, which displays the time in two time zones simultaneously. Plus, just tap the app to instantly switch between home and local time - a handy feature to make trips abroad that much easier.

The large, dimensional index marks and metal bezel accentuate the watch's large dial and radiate functionality, increasing the visibility that is so important to pilots who need to be able to see the time intuitively in their work.

The rotating disc indicator at the 9 o'clock position uses a dual winding motor to ensure that the rotation is smooth and, beauty, functional. The indicator rotates, not only to show the activation or deactivation of the alarm and stopwatch, but also functions as a battery level indicator.

The high-contrast combination of black and white, punctuated by colourful details on the dial and buttons, evokes the look of a cockpit instrument panel, while the dark colour variations are functional and indicate that you see the world from an aeronautical point of view.

The main components of the case, bezel and strap are made from bio-based resin, a material that is expected to help reduce environmental impact.

Case and bezel material

Carbon/Bio-based resin

Strap-Bio-based resin strap

Shock Resistant

Carbon Core Guard structure

Water-resistant-Water-resistant to a depth of 20 bar

Bluetooth: Connects to smartphone and automatically sets the time

Power supply and battery life

Tough Solar (solar powered)

Smartphone Link Functions / Application Connectivity

Smartphone Link function

Mobile Link (Bluetooth® wireless link)

CASIO Apps-RELOJES

App Connectivity Function

Automatic time setting

Easy clock setting

World time for approximately 300 cities

Flight log

Phone finder

Glass-Mineral Glass

Crown-Crown with screw-down clasp

Compatible band size-From 145 to 215 mm

Neobrite

World Time-Dual time (local city time change)

Stopwatch-1-second stopwatch

Measurement Capability: 23:59'59.

Measurement Modes: Elapsed Time and Split Times

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 colour-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 darkness)

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)

Date display

Normal time display:

Analogue: 3 hands (hour, minute (hand moves every 10 seconds) and second), 3 dials (dual time, 24-hour dual time and day).