Apple Watch SE preview: Basically a $400 smartwatch for $250

Apple Watches are starting to look mostly the same. The new Series 8 and Watch SE look so much like last year’s Series 7 that I struggle to tell them apart. But in fact the new models Apple unveiled last week bring some less obvious changes. The most notable of these is a new temperature sensor that’s currently being used for ovulation tracking, as well as an onboard high-g accelerometer that allows for crash detection.