He's not written books on the subject. You can setup a search yourself. There's also a blog with easier access than transcripts. https://www.robterhorst.com/pos

He's not written books on the subject. You can setup a search yourself. There's also a blog with easier access than transcripts. https://www.robterhorst.com/post/apple-watch-ultra-2-vs-series-9-scientific-review https://www.robterhorst.com/post/apple-watch-ultra-2-vs-seri...