Garmin 405 vs. Garmin 405cx

What's the Difference?

The Garmin 405 and Garmin 405cx are both GPS-enabled sports watches designed for athletes and fitness enthusiasts. While they share many similarities, there are a few key differences between the two models. The Garmin 405cx offers additional features such as a heart rate monitor and a wireless ANT+ technology that allows it to connect with other fitness devices. This makes it a more comprehensive option for those who want to track their heart rate and integrate their workouts with other compatible devices. On the other hand, the Garmin 405 is a more basic model that focuses primarily on GPS tracking and performance metrics. Ultimately, the choice between the two depends on the individual's specific needs and preferences.


AttributeGarmin 405Garmin 405cx
Display Size1.06 inches1.06 inches
Display Resolution124 x 95 pixels124 x 95 pixels
Battery Life8 hours8 hours
Water ResistanceYesYes
Heart Rate MonitorOptionalIncluded
Wireless SyncNoYes
Virtual PartnerYesYes

Further Detail


Garmin is a well-known brand in the fitness industry, offering a wide range of GPS-enabled sports watches. Two popular models from their lineup are the Garmin 405 and Garmin 405cx. While both watches share many similarities, they also have some key differences that may influence your decision when choosing the right one for your needs. In this article, we will compare the attributes of the Garmin 405 and Garmin 405cx to help you make an informed decision.

Design and Display

Both the Garmin 405 and Garmin 405cx feature a sleek and stylish design that is comfortable to wear during workouts. They come with a round display and a high-resolution screen that provides clear visibility even in bright sunlight. However, the Garmin 405cx has a slightly larger display compared to the Garmin 405, making it easier to read your stats at a glance.

Additionally, the Garmin 405cx offers a more durable design with a reinforced bezel, making it better suited for outdoor activities and rough usage. On the other hand, the Garmin 405 is lighter and more compact, which may be preferable for those who prioritize lightweight and minimalist designs.

Features and Performance

When it comes to features and performance, both the Garmin 405 and Garmin 405cx offer a wide range of functionalities to enhance your training experience. They both provide accurate GPS tracking, heart rate monitoring, and the ability to track various sports activities such as running, cycling, and swimming.

However, the Garmin 405cx takes it a step further by incorporating advanced features like ANT+ wireless technology, which allows you to wirelessly connect with compatible devices such as heart rate monitors, foot pods, and bike sensors. This feature provides more comprehensive data analysis and customization options for your workouts.

Another notable difference is the inclusion of a barometric altimeter in the Garmin 405cx, which enables precise tracking of elevation changes during your outdoor activities. This can be particularly useful for hikers, trail runners, and cyclists who want to monitor their ascent and descent accurately.

Both watches also offer virtual partner and virtual racer features, allowing you to compete against a virtual opponent or set a target pace for your workouts. These features can be motivating and help you push your limits during training sessions.

Battery Life and Charging

When it comes to battery life, the Garmin 405cx has a slight advantage over the Garmin 405. The Garmin 405cx offers up to 8 hours of battery life in GPS mode, while the Garmin 405 provides approximately 6 hours. This difference may be significant for endurance athletes or those who engage in longer training sessions.

Both watches come with a USB charging cable, allowing you to conveniently charge them by connecting to a computer or a wall adapter. However, it's worth noting that the Garmin 405cx also includes an AC adapter, which is not included with the Garmin 405. This can be a convenient addition for those who prefer charging their watch directly from a wall outlet.

Price and Availability

Price is often a crucial factor when choosing a sports watch, and the Garmin 405 and Garmin 405cx differ in this aspect as well. Generally, the Garmin 405cx is priced slightly higher than the Garmin 405 due to its additional features and enhanced performance.

However, it's important to consider your specific needs and budget when making a decision. If you require advanced features like wireless connectivity and a barometric altimeter, the Garmin 405cx may be worth the extra investment. On the other hand, if you prioritize a more affordable option without compromising on essential features, the Garmin 405 can still provide a reliable and accurate training experience.

Both the Garmin 405 and Garmin 405cx are widely available through various online and offline retailers. It's recommended to compare prices and check for any ongoing promotions or discounts to ensure you get the best deal possible.


In conclusion, the Garmin 405 and Garmin 405cx are both excellent sports watches that offer a range of features to enhance your training experience. While the Garmin 405cx provides additional functionalities like wireless connectivity and a barometric altimeter, the Garmin 405 offers a more lightweight and compact design.

Ultimately, the choice between the two models depends on your specific needs, preferences, and budget. Consider factors such as the importance of advanced features, durability, battery life, and pricing when making your decision. Regardless of your choice, both watches will provide accurate GPS tracking, heart rate monitoring, and a host of other features to help you achieve your fitness goals.

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