Due to the nature of the LCD screen used on COROS watches, the visibility is the best when used in outdoor environments under direct sunlight. The brightness of the backlight should be enough for dark or indoor use. Unfortunately you can’t change the brightness level of the backlight. There are ways to enhance the visibility during workouts.
- Turn on the "White Background" feature on the watch.
- Select Large in the font size option on the watch.
- Reduce the number of data metrics on the data page by changing the layout on the COROS app.
For APEX and VERTIX models, the visibility is affected by the sapphire glass. VERTIX may have a slight dimer screen than APEX due to the diamond-like coating on the screen.