MacRumors writes about a new report by DisplayMate that shows just how much better the Apple Watch Sport’s Ion-X Glass display is than the more expensive Apple Watch versions’ sapphire displays when it comes to bright lighting.
According to the report, the Apple Watch Sport’s Ion-X glass has much lower reflectivity and much higher contrast than the higher-end Apple Watch models with sapphire displays.
While both models have exactly the same OLED displays internally, the different covers mean that they each react differently in bright light. In fact, DisplayMate found that the Apple Watch with sapphire display reflects 74% more ambient light than does the Ion-X glass of the Sport.
In dark environments there is very little difference between the two.
Here’s a quote from the DisplayMate report explaining further: