The Apple Watch Ultra 3 provides an additional eight hours of battery life compared to the Ultra 2, offering a total of 42 hours instead of the prior 36 hours. In Low Power Mode, it can last as long as 72 hours, making it the longest-lasting battery for any Apple Watch, as stated by Apple. This time frame applies regardless of whether users are training, racing, or simply going about their daily activities. For prolonged outdoor exercise, the Ultra 3 can endure 20 hours in Low Power Mode with full GPS and heart rate monitoring. Moreover, it includes fast charging capability, yielding 12 hours of battery life with just a 15-minute charge. For additional information on the Apple event, keep an eye on Mashable’s live blog for updates regarding the launches of the iPhone 17, Apple Watch Series 11, and AirPods Pro 3.