How many worlds has Apple left to conquer? It its lifetime it has triumphed with computer, phone, tablet and watch. So, in 2017, does the world need an Apple computer inside an Apple Watch, with an Apple phone attached? It's got it with the Apple Watch Series 3.

Earning the top score of the group, the Apple Watch Series 3 netted the Editors' Choice award and the title of Best Smartwatch for iPhone users

Loaded with smart functions; great display; extremely easy to use

Not a great battery life; pricey; Not a great battery life; pricey

The Apple Watch Series 3 is essentially a suped up Series 2 with improved battery life and performance. Apps load faster, Siri is smarter, and the sports/activity tracking features are better.

Improved battery life over Series 2; though still not that great; Large ecosystem of apps and accessories; Much faster than the Series 2; Water resistant with plenty of sport features; Very helpful smart features including notifications; music playback; and Siri

Still requires phone to be helpful (this is not the Cellular version; Expensive; Always looks like a smartwatch; Not terribly durable

The future of smartwatches is being connected, but the Apple Watch Series 3 doesn't deliver on that promise. Get the non-LTE model instead.

Improved fitness-tracking features; Faster Siri with new vocal responses; Lower price than Series 2 and LTE Series 3

Still just 18-hour battery life

The Apple Watch Series 3 is the best smartwatch you can buy -- and oh so close to replacing your phone.

Makes calls from your wrist; Voice control is excellent; A joy to use; Masses of personalization options; Superb fitness tracking ability

Third-party app support is lacking; Expensive; Speaker is quiet

This year's Apple Watch looks just like last year's Apple Watch . The Series 3, which comes in two sizes and starts at $399, has few new features other than Siri's newfound ability to chime in at really awkward times.

An always-on LTE connection totally changes what you can do with a Watch; It's an impressive fitness tracker; Believe it or not, Siri's pretty great

The battery lasts a day in the best case---and often less; The Watch's interface still takes too long to figure out

The Apple Watch Series 3 is the closest attempt we've seen at a truly standalone smartwatch yet, and for that it deserves credit. But at the end of the day, it's still just a neat accessory for your iPhone.

Built-in cellular connectivity; Improved heart rate monitoring; Faster processor; Clear call quality; New band and case options

Expensive; LTE drains battery rapidly

The Apple Watch is now in its third year, so is it third time's a charm, or just more of the same? We've been wearing, exercising, calling, texting, and plenty of other things using the new 4G-equipped smartwatch to find out whether now is the time to start wearing it, or whether you can pass this...

Ability to ditch the iPhone; WatchOS 4; ease of making calls; still looks the part; greater fitness focus than before

Call issues if you are on captive Wi-Fi network; Apple Music streaming not here yet; no international roaming

The Apple Watch Series 3 is the best overall smartwatch you can buy, but battery limitations and add-on fees keep it from being a must-have upgrade.

Cellular connection works well for phone calls, email, Siri and messages; Music now syncs more easily; Improvements in fitness tracking and added watch faces; Adds barometer to GPS and swimproofing; Same overall size as last year's watch

Battery life takes a major hit when making calls or during GPS workouts; 42mm cellular model is expensive, and that's before monthly wireless service and Apple Music fees; Still requires an iPhone to set up and pair with

But that's not a typical use case. When jumping between phone and LTE connection as most people will do, I was easily able to make it through a full day. With the exception of making calls and listening to music, I measure my Apple Watch interactions in seconds, not minutes, but even when using it...

LTE gives Apple Watch the freedom it's always deserved; Incredibly fast chip and excellent battery life; Great health and fitness features

Some connectivity issues; No onboard App Store