The Apple Watch Ultra 2 takes the crown by doubling its battery life to up to 36 hours with regular use, and up to twice as much at 72 hours when in the Low Power Mode. This makes perfect sense since the Ultra is geared towards people involved in extreme sports where battery life is of crucial importance.

Apple's new Watch Series 10 is a giant leap over much older models because of the small advances along the way.

Apple Watch Series 10 (42mm, GPS) for $376 at Amazon, down from its usual price of $399. That's a discount of 6% and its lowest price yet. Opens in a new window Credit: Amazon Apple Watch Series 10 (42mm,