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Deal | Casio’s aviation-inspired G-Shock Gravitymaster GR-B300-1A watch drops to its lowest ever price on Amazon

The Casio G-Shock Gravitymaster GR-B300-1A pilot watch features a Triple-layer dial
ⓘ Casio
The Casio G-Shock Gravitymaster GR-B300-1A pilot watch features a Triple-layer dial
The Casio G-Shock Gravitymaster GR-B300-1A pilot watch has been discounted by 40% on Amazon in the US. The aviation-inspired analog watch features dual time, a 1-second stopwatch, Tough Solar, a bio-based carbon case, an LED light with afterglow, a daily alarm, and a full auto-calendar that extends to the year 2099.

Casio’s G-Shock Gravitymaster GR-B300-1A Pilot watch is currently discounted on Amazon in the US, reaching its lowest-ever price. To be more precise, the Casio Amazon storefront has slashed the price of its G-Shock Gravitymaster GR-B300-1A watch by 30%, bringing it down to just $199 from its $330 original list price. This matches its all-time low price, according to the Amazon price tracking website Camelcamelcamel

The GR-B300-A watch features an aviation-inspired design while combining G-Shock’s signature ruggedness. You get carbon fiber-reinforced resin and a seamless bezel design with the G-Shock Gravitymaster GR-B300-1A watch. On top of this, it utilizes the carbon core guard structure, which Casio claims is made of the same carbon material used in aircraft fuselages.

What’s interesting is that the analog watch offers all the features of the digital watches, namely, dual time, world time for 300 cities, a 1-second stopwatch, an hourly time signal, a phone finder, and Bluetooth connectivity with Casio app integration. Another nice-to-have is Casio’s Tough Solar charging, meaning you won’t have to worry about frequently replacing the battery. Speaking of battery life, it is said to last up to 18 months on a single charge. 

Additionally, it also ships with a flight log feature that allows users to record data like transit points, home destinations, points of departure, and so on. The pilot watch is rated for 200 m (20 bar) water resistance. 

All told, if you are an aviation buff and have your eye on this watch, then this is the best opportunity to snag the G-Shock Gravitymaster GR-B300-1A pilot watch, especially at this discounted price point. You can learn more about it in the review video attached below. 

Disclaimer: Notebookcheck is not responsible for price changes carried out by retailers. The discounted price or deal mentioned in this item was available at the time of writing and may be subject to time restrictions and/or limited unit availability.

Source(s)

Casio via Amazon

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> Expert Reviews and News on Laptops, Smartphones and Tech Innovations > News > News Archive > Newsarchive 2026 05 > Casio’s aviation-inspired G-Shock Gravitymaster GR-B300-1A watch drops to its lowest ever price on Amazon
Abhinav Fating, 2026-05-18 (Update: 2026-05-18)