Apple Watch Series 10 vs. Apple Watch Series 9: All the new upgrades
Another change is the Series 10's new wide-angle organic light-emitting diode (OLED), making it the first Apple Watch with this feature. This wide-angle OLED enables pixels to emit more light at a wider angle, with Apple claiming the Series 10 offers a 40 percent increase in brightness when viewed from an angle over the Series 9.