Apple unveils Watch series 4: It's number 1 in the world, says Tim CookSep 12 (AZINS) Apple at its launch event in Cupertino, California today unveiled its Watch series 4 unveiled. Speaking at the keynote event, Tim Cook said that  Apple Watch is the number 1 watch in the world. He said that Apple Watch is the first product Apple had showcased today, which shows how important this accessory has become for Apple.

The newly showcased watch is a redesigned version. In Apple watch series 4, the screen is over 30 per cent larger, however, the casing has not changed. Apple has also redesigned the user interface.

The look of Apple Watch Series 4 resembled exactly to the looks that had been doing the rounds in media for quite a while. Apple Watch Series 4 has thinner bezels and has come up with new complications. Apple has added more features like a breath timer for destressing. It has also added new displays to the watch face and extras like including headshots of your family on the watchface.

The digital crown now has haptic feedback and the speaker is now 50 per cent louder. Apple Watch Series 4 can now detect a fall. "Identifying a fall may sound like a straightforward problem, but it requires a tremendous amount of data and analysis. We learned that with falls, there is a repeatable data pattern," Jeff Williams said.

The heart sensor in Apple Watch Series 4 can detect atrial fibrillation, a heart condition that leads to irregular beating of the heart.

Apple is also launching an ECG scan on its new smart watches, which measures the electrical activity of the heart. The Series 4 can detect electrical impulses and provide a heart rhythm classification.

"We've added electrodes to the back of the Watch, and the digital crown allows you to take an electrocardiogram," said Williams.

It should also be noted that this is the first ECG product offered over the US directly to consumers. The Apple Watch data can even be shared with doctors. The Apple Watch will also send users notification if their heart rate is too low or the enough blood has not been pumped to the heart.

This will be available for the US customers later this year, followed by the availability for global consumers. Apple Watch Series 4 will have a battery life of 18 hours. Apple Watch Series has FDA approval for ECG recording, and for detecting  heart rhythm.