One of the biggest obstacles Apple has to report overcoming before its launch is battery life. Apple Watch runs for a day on a single charge, while rival smartwatches with sleep monitoring capabilities boast a week's worth of battery life on a full tank. This, according to Gurman, means that Apple can either choose a larger battery or add low power sleep mode ̵
Rumors of an Apple Watch sleep The monitoring feature has been floating since 2016. They were amplified in 2017 after Apple had turned up Beddit, a sleep tracking device maker, and companion iOS and Watch apps. Startup released its first after-sale product – a thin sensor strip that goes under the sheets to keep tabs on everything from sleep patterns to snoring – in August.
At your own expense, health is Apple's new frontier. And in these high intensity times, sleep is the holy grail of many hardworking professionals. After adding an ECG to Apple Watch 4, tech giant could take another small step toward establishing their wellness information by 2020.