90 hz display, small solar panel, louder speaker, infrared , sound output quality when connecting earbuds better, like akg on samsung phones. When always on display the watch face moves a little to avoid pixel burning, noise cancelation on mike. Seamless shake sensor working and create more types of shaking functions. Lte on all variants and you chose whether to use or not. More tiny pixels and crisp clear screen. These would be great but of course by calculating the space and size
