GR-B300-8A2DR

BHD 121.230 BHD 134.700
by G-SHOCK
Description

Built for the skies.

The GRAVITYMASTER GR-B300 is pro-grade aviation gear from G-SHOCK’s MASTER of G line. With a Carbon Core Guard structure and carbon fiber-reinforced resin case, it’s made to withstand extreme conditions.

Dual-time display, flight log memory, and smartphone sync make travel effortless. A bold cockpit-inspired design, large markers, and rotating disc indicator deliver clarity and function on every mission.

Crafted using bio-based resins for a lighter environmental impact.

Features

Tough Solar + Bluetooth Sync – Powered by light and always on time, the GR-B300 syncs with your smartphone to auto-adjust time globally. Built for flight, ready for anywhere.

Specifications

Case Size

59 × 54.7 × 15.7 mm


Weight

71 g


Case & Bezel Material

Bio-based carbon / Bio-based resin


Band Material

Bio-based resin band


Construction

Shock resistant

Carbon Core Guard structure


Water Resistance

200 meters


Power Supply

Tough Solar (solar powered)


Time Adjustment

Bluetooth® connectivity with automatic time adjustment


Smartphone Link Features

– Auto time adjustment

– Easy watch setting

– World time (approx. 300 cities)

– Flight log

– Phone finder

App: CASIO WATCHES


World Time

Dual time with home city swapping


Stopwatch

1-second stopwatch

– Measuring capacity: 23:59’59

– Modes: Elapsed time, split time


Timer

Countdown timer

– Unit: 1 second

– Range: 1 minute to 24 hours (1-minute and 1-hour increments)


Alarm

Daily alarm

Hourly time signal


Light

Super Illuminator LED light

Afterglow

LED color: White


Calendar

Full auto-calendar (to year 2099)


Energy Saving

Power Saving function (hands stop in the dark to save power)


Battery Indicator

Battery level display


Run Time

– Approx. 5 months on rechargeable battery (normal use)

– Approx. 18 months (stored in darkness with power save on)


Accuracy

±15 seconds per month (without mobile link)


Display

Analog:

– 3 hands (hour, minute*, second)

– 3 dials (dual time hour & minute, 24-hour, day indicator)

*Minute hand moves every 10 seconds