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COROS APEX Pro FAQs & SpecsUpdated 2 years ago

Table of Contents


How do I reset my APEX Pro?

There are 2 ways to reset your COROS watch.

  1. On the watch
    1. System > More Settings > Reset > Reset All
  2. On the COROS app when the watch is connected
    1. Device page > tap on the 6-digit watch ID > scroll down on the new page and tap "Reset"

Watch reset will not affect the data synced to your COROS account in any way. However, the data and personalized settings stored on the watch will be removed as the watch returns to the factory setting.

Watch reset will not clear the Bluetooth connection information stored on your phone. The watch/phone connection should be automatically re-established momentarily after the reset. 

Certain hardware/software bugs and issues can be fixed by performing a watch reset.

I can't turn on my COROS watch. What do I do?

Power button on COROS watches

  • COROS PACE – lower left button (CONFIRM button)
  • COROS APEX – top button (Digital Dial)
  • COROS APEX Pro – top button (LIGHT button)
  • COROS VERTIX – middle button (Digital Dial)
  • COROS VERTIX 2 - top button (LIGHT button)

If you can’t turn on the COROS watch, please follow the steps below to troubleshoot.

  • Charge the watch for over 2 hours even if the screen doesn’t turn on. 
  • Remove the charging cable from the watch (this step is very important).
  • Press and hold the Power button for over 15 seconds or until the COROS logo shows up to restart the watch.

Please don’t press both buttons on your COROS watch at the same time. Otherwise your watch will enter Inactive mode and will not respond to normal operation or charging. If you accidentally do so and the watch enters Inactive mode, please follow the steps above to return the watch to normal operation.

Please power off the watch if you plan to stop using it - main watch face > System > More Settings > Turn Off.

Why is the best mile/km pace not the same as my best lap pace?

We all love how informative the workout summary on the COROS app workout details page is. However, some users may notice that the best mile/km pace from the workout summary isn't the same as their best mi/km lap pace found on the lap details chart. The reason is because the watch calculates the best mile/km pace based on consecutive segments rather than rolling segments. As a result, if your lap setting isn't 1 or if you have a few shorter laps, the best mile/km pace is likely to be different than the best pace highlighted in blue in the lap details chart. 

Battery Usage and Optimizations

Battery Usage Tool

Built into every COROS watch is a "Battery Usage" tool that allows you to view on-demand usage reports on the consumption of your watch battery during the current charging cycle. 

  • To access the Battery Usage tool, hold the back button to access the Toolbox, then scroll until you find "Battery Usage" (see photo below)

The Battery Usage tool will then display a graph that shows you the current battery percentage of your watch, a graph showing your historical battery drain, when your last charge was, and the estimation of how long your battery will last based on "standard use".

To view a more in-depth breakdown of the battery usage statistics, press the digital dial.

From this screen you can see the following metrics: Remaining Power, Estimated Daily Use Left, Estimated Max Daily Use Left, Estimated GPS Use Left, Last Charge, Since Last Charge. You will also find the most common features which cause battery drain here, and what percent of your recent battery drain can be attributed to these common features. Below is an explanation of each of the common features which consume battery:

  • System - Normal operating activities. Any type of regular maintenance on the watch or features that are vital to maintaining a functional watch (i.e. keeping the clock up-to-date) will fall within the "System" category
    • Notifications - Any notifications which are pushed to your watch, both for workout alerts (lap alerts, etc.) and daily notifications (calls, text messages, etc). This is displayed as a number rather than being included in the overall percentage estimate.
  • GPS Workouts - Any activity recorded which uses GPS signals to measure and record distance, etc.
  • Backlight - Any power used to illuminate your watch screen. The more you use your backlight (Night Mode, Backlight Gesture, etc.), the higher this percentage is likely to be.
  • Daily Heart Rate - Measurements taken that consume battery to provide daily heart rate data. You have the ability to specify this to "Real-Time" or "Every 10min"

Please keep in mind that when these measurements are shown as a percentage, they will also add up to ~100% (excluding rounding instances). This means that, theoretically, if you charged your watch within the last 10 minutes, your "System" use could equal 100% if you have not received notifications, used the backlight, etc. This is completely normal to see.

It's also important to highlight that this tool is an estimator and should not be used as absolute truth. If your battery usage report shows an error such as "Since Last Charge: 3 Days", when in reality you had charged 14 days ago, please ensure all activities are uploaded from your watch to the COROS app, then perform a reset of your watch. 

  • Hold the back button to open the Toolbox -> System -> More Settings -> Reset All

Battery Optimizations

To prolong the battery life on your COROS watch, there are a few things settings you will want to keep an eye on. To maximize battery life, you will want to minimize the number of times in daily use that your watch records your heart rate, turns on the backlight, and receives notifications. The frequency in which you choose to use these features makes a big impact on how long your battery will last, here are the settings which will give you the most battery life:

  • System -> Sensors -> Optical HR -> Daily HR -> Every 10 min.
  • System -> More Settings -> Backlight -> OFF
  • Open the COROS app -> Device Page (4th tab at the bottom) -> Notifications -> Off (or select the few options which are most vital)

Other Frequent Causes of Battery Drain

In the real world, battery performance is by a variety of factors. Things like the strength of your GPS signal or setting up your watch can impact the amount of battery the watch is using.

Activity alerts and vibrations can consume a significant amount of battery, and the more frequent these are the more of an impact they have on battery life. To maximize battery life, try reducing the number of vibrating alerts you get throughout your run/workouts to as few as possible. In addition, each alert during workouts turns on the backlight for a few seconds, which also will greatly reduce overall battery life.

Using navigation features also consumes an additional ~10% battery from your watch as compared to normal GPS use. If navigation is being used, but you only scroll to the navigation page periodically, this will most likely put your battery performance back to the normal range as compared to viewing the navigation page for the entirety of your workout.

Where can I find the COROS APEX Pro User Manual?

Click here to see the COROS APEX Pro manual.

See more COROS APEX Pro FAQs:

Click here for more FAQs on APEX Pro.

COROS APEX Pro Product Specifications

  • Display Size: 1.2 in. 240 x 240 (64 colors)
  • Display Type: Touch Screen Memory LCD
  • Screen Material: Sapphire Glass
  • Bezel Material: Titanium Alloy
  • Cover Material: Aluminum
  • Strap Material: Silicone
  • Quick Release Band: 22mm
  • Physical Size: 47 x 47 x 13.4 mm
    • Weight With Silicone Band: 59 g
    • Weight With Nylon Band: 49 g

Click here to see full APEX Pro product specs.

Have a technical issue with a COROS GPS watch? We'll help you get it figured out!

The first step we recommend is contacting COROS's fantastic support team directly — this can be done in three ways:

As an Authorized COROS Dealer, all COROS smartwatches sold on are completely eligible for COROS's 2-Year Manufacturer Warranty. So you can be confident you'll be protected from any product defects within 2 years of your delivery date!

When you purchase a COROS product on, you have 60 days to return or exchange it—no questions asked!

The team is here to support you the entire way! So if you're not getting the help you need, please contact us via the Chat feature and we'll make sure you are completely taken care of.

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