iFixit has taken apart the Apple Watch Series 7 and showed that despite having minimal changes on the outside, it does feature some big upgrades underneath. As we mentioned in our review, the main difference between this device and the Series 6 is its slightly bigger display, Now, iFixit's teardown shows that its display uses touch-integrated OLED panel or "on-cell touch," which debuted with the iPhone 13.
The website says the move is unusual for Apple, since it typically introduces new display tech — such as OLED, always-on and variable refresh rate — on the lower-volume Apple Watch first instead of the other way around. According to the former Apple engineers iFixit worked with for this teardown, this new display may have caused production delays and made the company release the device later than it would've liked.
When the tech giant first announced the Series 7 in September, it didn't have a concrete release date. The former Apple engineers said that usually signals delays, and the most likely culprit was the manufacturing hiccups caused by the Watch's display. "[S]creens have some of the most complex supply chains and assembly processes in the industry," the website explained. In addition to using new technology, Apple also made the display bigger and gave it a refractive edge to make the sides look like they're slightly curved.
iFixit also found that the model's battery is larger than its predecessors. That doesn't translate to longer battery life, though, since the device's larger screen likely uses more power. There are a few other more minor changes compared to previous versions of the Watch. You can see the whole teardown on iFixit's website, along with more photos of what's inside the Series 7.