Casio G-Shock GA-2000-1A9JF Carbon Core Guard Basic


Brand, Seller, or Collection Name G-Shock
Model number GA-2000-1A9JF
Part Number GA-2000-1A9JF
Model Year 2019
Item Shape Round
Display Type Analog-Digital
Clasp Tang Buckle
Case diameter 47 millimeters
Case Thickness 14.1 millimeters
Band Material Plastic
Band width 25
Band Color Black
Dial color Black
Item weight 2.26 Ounces
Movement Quartz
Water resistant depth 200 Meters


When it comes to dependable and rugged timepieces, Casio’s G-Shock series has been a top choice for adventurers, outdoor enthusiasts, and watch connoisseurs alike. The G-Shock line has consistently delivered durability, functionality, and style, keeping up with the demands of an active lifestyle. In this review, we’ll take a closer look at the Casio G-Shock GA-2000-1A9JF Carbon Guard, a modern timepiece designed to withstand the toughest conditions while still exuding a sleek and contemporary aesthetic.

Design and Build Quality

The GA-2000-1A9JF Carbon Guard stands out with its striking appearance, combining a black resin case with a yellow-accented dial. The watch’s carbon fiber-reinforced case and bezel provide exceptional durability and impact resistance, making it suitable for various activities such as hiking, biking, and even extreme sports. Its sturdy construction ensures that it can handle accidental bumps and falls, giving wearers peace of mind during their adventures.

At first glance, the watch may seem bulky due to its substantial dimensions, measuring 51.2mm x 48.7mm x 14.1mm. However, thanks to its lightweight carbon materials, it feels surprisingly comfortable on the wrist, even during extended wear. The adjustable black resin band adds to its overall comfort, providing a snug fit for different wrist sizes.

Functionality and Features

One of the standout features of the GA-2000-1A9JF Carbon Guard is its multi-functional digital-analog display. The watch’s analog hands provide a traditional time-telling experience, while the digital display offers additional functionality such as a full auto-calendar, world time in 31 time zones, and five daily alarms. It also includes a stopwatch, countdown timer, and LED light for enhanced visibility in low-light conditions.

The watch’s shock-resistant construction ensures that it can withstand strong impacts and vibrations, making it an ideal companion for outdoor activities. Additionally, it boasts water resistance up to 200 meters (660 feet), allowing users to wear it confidently during swimming, snorkeling, or other water-based adventures.

The GA-2000-1A9JF Carbon Guard features Casio’s renowned Tough Solar technology, which harnesses both natural and artificial light to power the watch. This eliminates the need for battery replacements, making it more environmentally friendly and convenient for users.

User Experience

Putting on the GA-2000-1A9JF Carbon Guard for the first time, I was immediately impressed by its comfortable fit and well-balanced weight distribution. Despite its larger size, the watch didn’t feel cumbersome on my wrist, and the adjustable band ensured a secure and snug fit throughout the day. The resin band’s texture provided ample flexibility, preventing any discomfort caused by rigidity during movement.

Navigating through the watch’s various functions and modes was intuitive and straightforward. The buttons are well-positioned and responsive, allowing for easy access to features like setting alarms, adjusting the hands, or activating the LED light. The digital display is clear and legible, with bold numerals and indicators visible at a glance.

One aspect that sets this G-Shock model apart from others is its innovative interchangeable band system. The watch comes with two different bands—a black resin band and a black and yellow cloth band—allowing users to switch between them based on their preferences or the occasion. The cloth band adds a unique touch to the watch’s overall look and can be particularly comfortable in hot climates, as it allows for better air circulation.

Style and Versatility

While G-Shock watches have always been revered for their ruggedness, the GA-2000-1A9JF Carbon Guard introduces a new level of style into the mix. The combination of black resin with yellow accents gives the timepiece a modern and sporty vibe, making it suitable for both casual and active wear.

The watch’s bold design elements, such as the oversized bezel and textured dial, create a visually striking appearance. It effortlessly blends functionality with contemporary aesthetics, allowing wearers to transition seamlessly from outdoor adventures to everyday urban life. Whether paired with outdoor gear or a casual outfit, the GA-2000-1A9JF Carbon Guard adds a touch of personality and flair.

Pros & Cons


  • Exceptional durability and impact resistance
  • Lightweight and comfortable carbon materials
  • Multi-functional digital-analog display
  • Shock-resistant and water-resistant up to 200 meters
  • Tough Solar technology for eco-friendly operation -### Cons:
  • Bulky size may not be suitable for those with smaller wrists
  • Limited color options available
  • Some users may find the digital-analog display overwhelming or complicated to navigate initially


In conclusion, the Casio G-Shock GA-2000-1A9JF Carbon Guard is a remarkable timepiece that embodies the essence of adventure and durability. Its combination of rugged design, exceptional build quality, and versatile functionality make it an ideal choice for outdoor enthusiasts and active individuals.

The watch’s carbon fiber-reinforced case and bezel provide unparalleled protection against impacts, ensuring that it can withstand the toughest conditions. With features like shock resistance and water resistance up to 200 meters, wearers can confidently engage in various activities without worrying about damaging their timepiece.

The GA-2000-1A9JF Carbon Guard also offers a range of useful functions, from a full auto-calendar to world time and multiple alarms, making it a practical companion for everyday life. The Tough Solar technology eliminates the need for battery replacements and contributes to a more eco-friendly approach.

While the watch’s larger size may not be suited for everyone, its lightweight construction and adjustable resin band ensure a comfortable fit on most wrists. The interchangeable band system adds versatility to the overall design, allowing users to switch between a black resin band and a black and yellow cloth band for different occasions.

Lastly, the GA-2000-1A9JF Carbon Guard effortlessly combines durability with contemporary style. Its bold design elements and striking color scheme create a sporty and modern aesthetic that can be effortlessly integrated into both outdoor and urban settings.

Overall, the Casio G-Shock GA-2000-1A9JF Carbon Guard proves to be a reliable and stylish timepiece that meets the demands of adventure seekers and those seeking a durable and functional watch. With its impressive features, exceptional build quality, and modern design, it earns its place among the top choices within the G-Shock series.

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