ApplewatchSeries 6 can measure blood oxygen levels in about 15 seconds, using both red and infrared light.
Apple is also debuting a new service for the AppleWatch called Fitness Plus, a subscription service for virtual workouts.
The AppleWatchSeries 6 will be available starting at $399 for a 40mm model, the same price as the outgoing Series 5. Cellular models start at $499. The Series 6 is available to order starting today, September 15th, and will start shipping on Friday, September 18th.