Samsung will be holding an event in Paris tomorrow to unveil new Foldable smartphones, a new Galaxy Watch and an all-new health ring. Getting ahead of the event, Bloomberg reports that Samsung Electronics Co. will unveil a new health-tracking feature that Apple Inc.’s watches don’t yet have in the latest effort to steal a lead on the US electronics leader.

The new Galaxy Watch models will track the wearer’s Advanced Glycation End Products (AGEs) index, which may provide an indicator of metabolic health and biological age. An Ultra edition, designed to go up against the $799 Apple Watch Ultra 2, is also expected to debut alongside new foldable handsets and a Galaxy Ring health tracker.

Canalys analyst Jack Leathem wrote: “Samsung’s ecosystem portfolio is core to attracting brand switchers in the premium segment. Bringing AI-powered health and fitness features to wearables will be important to differentiate from other ecosystem vendors and smartwatch specialists.”

Samsung’s focus in Paris underscores how device manufacturers are exploring health monitoring features as a way to attract and retain customers. Both Apple and its Korean rival have worked for years on developing health sensors.

AGEs readers “have existed in larger hardware and we’ve now miniaturized that and made it possible to measure that through the watch for the very first time,” said Hon Pak, Samsung’s mobile digital health chief. The technology is seen as a reasonable stopgap on the path to developing noninvasive continuous glucose monitoring. “We believe that consumers need something now.”

To do the more sophisticated measurement, Samsung engineers added more colors of LEDs, which are used to illuminate blood vessels and draw information about the user’s health. The new watches also measure heart rate during intensive workouts with 30% greater accuracy, Samsung said ahead of its showcase event.