The Apple Watch Ultra A2622 features the same SiP(system-in-package) as the Apple Watch Series 8. This SiP includes the same Apple application processor found in the Series 7. Like the Series 7, the processor is integrated inside the BGA-POP package with SK Hynix’s mixed memory on the top, replacing the previously used Micron memory. Unlike the SiP from the Series 7 and 8 watches, the Ultra leaves the backside of the SiPunoccupied. For example, the Series 7 SiP had four ICs backside: the U1 UWB module, GPS Receiver, LB FEM, and the accelerometer/gyroscope sensor.