G-Shock Gravitymaster Series Mens Watch GRB300-1A. Case size 59 x 54.7 with a thickness of 15.7mm. WR rating of 200m. G-Shock Toughsolar model. Shock resistant model with a carbon core guard structure. Mineral Crystal glass. Smartphone App connected model. Approximate weight of 70gm.
Designed for the skies and built to withstand the extreme, the Casio G-Shock GRB300-1A Gravitymaster is the ultimate tool watch for aviation enthusiasts and adventurers. Designed with a bold, aviation-inspired look, this high-performance timepiece features a carbon core guard structure for enhanced strength and durability while maintaining a lightweight feel.
Packed with advanced features like Bluetooth® connectivity, world time and the ability to connect to a smartphone and automatically adjust the time, the GRB300-1A is ready for any mission. The large, easy-to-read display with Super Illuminator LED ensures visibility in all conditions, and its 200-meter water resistance makes it suitable for both sky and sea. With its black and red stealth design and cutting-edge tech, the G-Shock GRB300-1A Gravitymaster delivers the perfect combination of rugged functionality, precision, and style—making it a must-have for those searching for a premium aviation G-Shock watch in Australia.
The G-Shock Gravitymaster GRB300-1A is equipped with advanced smartphone connectivity features designed for seamless integration and enhanced functionality. Through the CASIO WATCHES app and Bluetooth® mobile link technology, users can enjoy automatic time adjustment for precision timekeeping wherever they go. Effortlessly manage watch settings directly from your smartphone, access data for approximately 300 world time cities, and keep track of flight paths with the flight log feature. The phone finder function adds convenience, helping you locate your smartphone with ease. Perfect for pilots, travelers, and tech-savvy users, the GRB300-1A ensures that your watch stays perfectly synced and packed with smart features to support your dynamic lifestyle. Ideal for adventurers, aviators and all in between.
Ships in 1-3 Business Days from Sydney with Australia Post Express. Sydney customers can pick up on the same day from our Alexandria showroom after placing the order by choosing Click & Collect as the delivery option.
2 year Australian warranty from Shriro Australia. StarBuy are Authorised online and instore stockists of Casio G-Shock Watches. All Casio G-Shock Watches are shipped with local and an international manufacturers warranty and in G-Shock original packaging.
WARNING - KEEP NEW & USED BATTERIES OUT OF REACH OF CHILDREN. THIS PRODUCT CONTAINS A BUTTON or COIN CELL BATTERY.
Swallowing may lead to serious injury in as little as 2 hours or death, due to chemical burns and potential perforation of the oesophagus.
If you suspect your child has swallowed or inserted a button battery immediately call the 24-hour Poisons Information Centre on 13 11 26 for fast 24/7 expert advice.
Examine all Watches & Clocks received and make sure the battery compartment is correctly secured, e.g. that the screw or other fastener is tightened. Do not use if the compartment is not secure.
Dispose of used button batteries immediately and safely. Flat batteries can still be dangerous.
Button batteries are hazardous. Keep batteries out of reach of children.
Never allow children to replace batteries in any device.
We recommend exhausted batteries be individually wrapped in tape to insulate them from accidental contact and dispose of separately.

G-Shock GRB300-1A
$439.00
$649.00
$649.00
G-Shock Gravitymaster Series Mens Watch GRB300-1A. Case size 59 x 54.7 with a thickness of 15.7mm. WR rating of 200m. G-Shock Toughsolar model. Shock resistant model with a carbon core guard structure. Mineral Crystal glass. Smartphone App connected model. Approximate weight of 70gm.
Designed for the skies and built to withstand the extreme, the Casio G-Shock GRB300-1A Gravitymaster is the ultimate tool watch for aviation enthusiasts and adventurers. Designed with a bold, aviation-inspired look, this high-performance timepiece features a carbon core guard structure for enhanced strength and durability while maintaining a lightweight feel.
Packed with advanced features like Bluetooth® connectivity, world time and the ability to connect to a smartphone and automatically adjust the time, the GRB300-1A is ready for any mission. The large, easy-to-read display with Super Illuminator LED ensures visibility in all conditions, and its 200-meter water resistance makes it suitable for both sky and sea. With its black and red stealth design and cutting-edge tech, the G-Shock GRB300-1A Gravitymaster delivers the perfect combination of rugged functionality, precision, and style—making it a must-have for those searching for a premium aviation G-Shock watch in Australia.
The G-Shock Gravitymaster GRB300-1A is equipped with advanced smartphone connectivity features designed for seamless integration and enhanced functionality. Through the CASIO WATCHES app and Bluetooth® mobile link technology, users can enjoy automatic time adjustment for precision timekeeping wherever they go. Effortlessly manage watch settings directly from your smartphone, access data for approximately 300 world time cities, and keep track of flight paths with the flight log feature. The phone finder function adds convenience, helping you locate your smartphone with ease. Perfect for pilots, travelers, and tech-savvy users, the GRB300-1A ensures that your watch stays perfectly synced and packed with smart features to support your dynamic lifestyle. Ideal for adventurers, aviators and all in between.
Ships in 1-3 Business Days from Sydney with Australia Post Express. Sydney customers can pick up on the same day from our Alexandria showroom after placing the order by choosing Click & Collect as the delivery option.
2 year Australian warranty from Shriro Australia. StarBuy are Authorised online and instore stockists of Casio G-Shock Watches. All Casio G-Shock Watches are shipped with local and an international manufacturers warranty and in G-Shock original packaging.
WARNING - KEEP NEW & USED BATTERIES OUT OF REACH OF CHILDREN. THIS PRODUCT CONTAINS A BUTTON or COIN CELL BATTERY.
Swallowing may lead to serious injury in as little as 2 hours or death, due to chemical burns and potential perforation of the oesophagus.
If you suspect your child has swallowed or inserted a button battery immediately call the 24-hour Poisons Information Centre on 13 11 26 for fast 24/7 expert advice.
Examine all Watches & Clocks received and make sure the battery compartment is correctly secured, e.g. that the screw or other fastener is tightened. Do not use if the compartment is not secure.
Dispose of used button batteries immediately and safely. Flat batteries can still be dangerous.
Button batteries are hazardous. Keep batteries out of reach of children.
Never allow children to replace batteries in any device.
We recommend exhausted batteries be individually wrapped in tape to insulate them from accidental contact and dispose of separately.
G-Shock Gravitymaster Series Mens Watch GRB300-1A. Case size 59 x 54.7 with a thickness of 15.7mm. WR rating of 200m. G-Shock Toughsolar model. Shock resistant model with a carbon core guard structure. Mineral Crystal glass. Smartphone App connected model. Approximate weight of 70gm.
Designed for the skies and built to withstand the extreme, the Casio G-Shock GRB300-1A Gravitymaster is the ultimate tool watch for aviation enthusiasts and adventurers. Designed with a bold, aviation-inspired look, this high-performance timepiece features a carbon core guard structure for enhanced strength and durability while maintaining a lightweight feel.
Packed with advanced features like Bluetooth® connectivity, world time and the ability to connect to a smartphone and automatically adjust the time, the GRB300-1A is ready for any mission. The large, easy-to-read display with Super Illuminator LED ensures visibility in all conditions, and its 200-meter water resistance makes it suitable for both sky and sea. With its black and red stealth design and cutting-edge tech, the G-Shock GRB300-1A Gravitymaster delivers the perfect combination of rugged functionality, precision, and style—making it a must-have for those searching for a premium aviation G-Shock watch in Australia.
The G-Shock Gravitymaster GRB300-1A is equipped with advanced smartphone connectivity features designed for seamless integration and enhanced functionality. Through the CASIO WATCHES app and Bluetooth® mobile link technology, users can enjoy automatic time adjustment for precision timekeeping wherever they go. Effortlessly manage watch settings directly from your smartphone, access data for approximately 300 world time cities, and keep track of flight paths with the flight log feature. The phone finder function adds convenience, helping you locate your smartphone with ease. Perfect for pilots, travelers, and tech-savvy users, the GRB300-1A ensures that your watch stays perfectly synced and packed with smart features to support your dynamic lifestyle. Ideal for adventurers, aviators and all in between.
Ships in 1-3 Business Days from Sydney with Australia Post Express. Sydney customers can pick up on the same day from our Alexandria showroom after placing the order by choosing Click & Collect as the delivery option.
2 year Australian warranty from Shriro Australia. StarBuy are Authorised online and instore stockists of Casio G-Shock Watches. All Casio G-Shock Watches are shipped with local and an international manufacturers warranty and in G-Shock original packaging.
WARNING - KEEP NEW & USED BATTERIES OUT OF REACH OF CHILDREN. THIS PRODUCT CONTAINS A BUTTON or COIN CELL BATTERY.
Swallowing may lead to serious injury in as little as 2 hours or death, due to chemical burns and potential perforation of the oesophagus.
If you suspect your child has swallowed or inserted a button battery immediately call the 24-hour Poisons Information Centre on 13 11 26 for fast 24/7 expert advice.
Examine all Watches & Clocks received and make sure the battery compartment is correctly secured, e.g. that the screw or other fastener is tightened. Do not use if the compartment is not secure.
Dispose of used button batteries immediately and safely. Flat batteries can still be dangerous.
Button batteries are hazardous. Keep batteries out of reach of children.
Never allow children to replace batteries in any device.
We recommend exhausted batteries be individually wrapped in tape to insulate them from accidental contact and dispose of separately.