Apple Watch Series 12 vs Series 11: Health Upgrades and Faster Charging
Apple Watch Series 12 launches with enhanced health tracking and faster charging, highlighted by a new Health Sensing System able to measure heart rate and variability more frequently than its predecessor. The S11 chip and new ceramic case options round out the upgrade. The new Health Sensing System captures heart rate every five seconds and heart rate variability up to 24 times more often than Series 11, feeding a new Readiness score for recovery tracking. While both watches charge to 80 percent in about 30 minutes, a 15-minute charge on Series 12 yields 12 hours of use versus eight hours on Series 11. Series 12 starts at $399, matching Series 11's launch price, with availability from September 18. Buyers focused on notifications and activity tracking may find few reasons to upgrade, as display brightness and battery life ratings remain identical between the two generations.