> I'd also be surprised if they used custom cores for smaller chips like for airpods/airtags. AirTags have an nRF52xxx SoC by Nordic. The only Apple silicon in

> I'd also be surprised if they used custom cores for smaller chips like for airpods/airtags. AirTags have an nRF52xxx SoC by Nordic. The only Apple silicon in them is the U1 UWB chip (which is also present in iPhone, HomePod, Watch, ...) which runs on a 16nm Cortex M4. Recent AirPods run on H1 / H2 SoCs though, which are custom Apple chips. Wouldn't be surprised if they are built around the E-cores from the iPhone SoC.