The Apple Watch has been updated for the fourth time in as many years, bringing with it a number of new features , and for those looking to upgrade from the first-generation model , there's a tweaked design which features a bigger screen and other cool new tech .

Bigger and more immersive screen looks superb; Same strap size despite new design; Will last you through a day

Electrocardiogram feature not available at launch; Some WatchOS 5 nitpicks; No battery improvement

The new Apple Watch Series 4 is available today and this new wearable from Apple may have been the best new product launched at the event and couple of weeks ago in California. The Apple Watch Series 4 has been "redesigned and reengineered" with a focus on the features that people use the most:...

Expanded viewable area, Light weight, Solid battery life, Gorgeous display with stunning animations for watch faces

No advanced sleep tracking, No always-on display option, No support for third party watch faces, Swipe to switch watch faces is annoying

Earlier Apple Watches were impressive wearables, but the new Series 4 is the strongest argument yet for wearing a smartwatch. And that's not just because of bigger, edge-to-edge screen or its improved fitness tracking either.

Out of the all the products Apple unveiled during its September event – which include the and – it was the Apple Watch Series 4 that really stood out. This is because, while the bevy of iPhones received minor updates, Apple's wearable was completely redesigned.

The updated Series 4 Apple Watch is a fantastic wearable. The bigger screen makes a huge difference, as do the niceties such as the haptic feedback when you turn the crown. WatchOS 5 is by far the best of its type, and its easier and speedier than even on the Series 4. You might not use all its features, but you'll find a subset indispensable. We can't yet test some of the health features, and would advise anyone tempted by the ECG feature to wait until it's available if that's your main reason for buying. Although there's an LTE version, bear in mind you'll still need a compatible iPhone to use an Apple Watch. And now that the Series 3 has had a price drop, it makes the Series 4 look pricey. But if you want the best, this is it.

The Apple Watch 4 is better in every way, but you’ll have to wait for its most exciting feature to emerge

No matter h ow skeptical we were from the very beginning the Apple Watch is everywhere now. You see them on the wrists of all kinds of people-not just tech nerds. It is officially a thing.

The display is actually very pretty and makes the Watch easier to use

Battery life has diminished and some of the coolest features aren't available yet

No matter how sceptical we were from the very beginning the Apple Watch is everywhere now. You see them on the wrists of all kinds of people-not just tech nerds. It is officially a thing.

After two weeks with my Apple Watch Series 4 I'm still glad I bought it, and I was upgrading from the very capable Apple Watch Series 3. The big thing for me right now is the larger and brighter display. The stronger haptic feedback and louder speaker are nice plusses, too.

Bigger and brighter watch face; new heart rate sensors; better speaker; old watchbands still fit

Auto-sensing for ending some workouts is too aggressive; LTE available only on stainless steel models; settings like Theater Mode still don't mirror between iPhone and Apple Watch; battery life not good enough for back country use

I am of two minds on the Apple Watch. On one hand, I think that it's the best overall smartwatch you can currently buy. And to that end, the Series 4 -- now available starting at $399 -- is the best Apple Watch to date.

The Apple Watch Series 4 offers a larger, crisp display that shows more with less bezel, superfast speed and a louder speaker; It adds high and low heart-rate detection, fall detection with SOS trigger, and (eventually) FDA-cleared EKG for more detailed heart readings

Starting prices are higher than last year; Battery life still won't last past two days; Watch face options are still very limited in choice and function; Only works with iPhones