Earlier this month Apple showed the world what it has in store for iPhone and Apple Watch fans. Specifically, with respect to the latter capability, it seems that the latter won't work for many people out of the box for one reason as pointed out by No1ARSoul over on Reddit.
Overseas customers looking to get the new Apple Watch, and keen on the new ECG feature shouldn't worry, though. Otherwise, younger Watch owners will have to adjust this setting given that the corresponding default will be "off". Redditor No1ARSoul, however, noted that you'll only find that out if you read the online manual for Fall Detection and how it's enabled by default for anyone whose age is 65 or older in their Apple accounts. This may suggest that the feature could still require some further refinement to avoid false positives being triggered when used by the general population in varying scenarios. While no date is reportedly set for a global roll-out, Apple is working on obtaining clearance and is expected to release an update adding the new feature in once approval is obtained.
If you want to disable it, follow the same process as above and toggle off Fall Detection It is automatically turned on for users aged 65 or older.
The teardown also reveals that the Apple Watch Series 4 has a bigger, 291.8mAh battery, a 4% capacity increase over Series 3, and that's despite the Watch being thinner by 0.7mm. Many reported that they could not trigger a fall alert on objective, but it's not clear if all of them had the feature turned on. It will wait for a response if you are moving.
The Apple Watch Series 4 is a massive upgrade to the wearable device for both hardware and software, especially when it comes to health and fitness features. The same sensor has a dedicated cutout beside the microphone on the Series 3.
Apple said all falls are recorded in the Apple Health app (unless you reply that you didn't fall when your Apple Watch asks).