The Apple Watch Series 10 has a slimmer design and a brighter screen, while the Series 8 has an active blood oxygen sensor.

Released just a few months ago, the undeniably gorgeous black titanium version of last year's Apple Watch Ultra 2 is on sale at both Amazon and Best Buy for $80 less than usual for a limited time.

We all know about heat-related illnesses, like heat exhaustion and heat stroke, that are mainly caused by your body ...