Apple Watch Series 12 lasts 51 hours in test, over 2X Apple's rating

In the first full battery rundown test, the Apple Watch Series 12 lasted 51 hours — more than double Apple's official 24-hour estimate and longer than the Series 11's 46–49 hours. Charging from 0 to 80 percent took 57 minutes versus 40 minutes for the previous model.

• Series 12 lasted 51 hours in testing vs Apple's 24-hour rating
• Series 11 managed 46 and 49 hours in last year's tests
• 0–80% charging takes 57 minutes vs 40 minutes on Series 11
• Continuous heart-rate monitoring is the headline new feature