Following the death of Apple co-founder Steve Jobs in 2011, the event was seen as a pivotal moment for Apple to prove it still had the knack for innovation – with reaction on social media a mixed bag.
The Apple Watch’s introduction upstaged the company's two new, larger iPhones, which alongside bigger screens, have a new horizontal viewing mode to take advantage of the larger display.
Apple also introduced Apple Pay, a system for using the phone to make credit card payments at retail stores.
On Twitter, some were quick to point out the frequency at which technology seems to become obsolete - to the detriment of wallets the world over.
In pictures: Apple Watch
In pictures: Apple Watch
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Media and guests take a close look of the new Apple Watch
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Tim Cook introduces the new Apple Watch
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Apple CEO Tim Cook announces the Apple Watch
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Tim Cook with a side view of new Apple Watch
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Tim Cook explains the use of the screen on the new Apple Watch
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The many faces of the Apple Watch
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Share the beating of your heart with the Apple Watch
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Send a finger-drawn image
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The crowd use their devices to capture the Apple Watch
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The Digital Crown to magnify content on a small display
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Sensors to detect pulse rate
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Options for custom materials include gold
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The Digital Crown brings you to your apps
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The Activity app tracks three aspects of movement
And as new devices and features dropped at the event in California, frustrated Apple users, and those seizing a chance to unleash their cynicism online united under the hashtag '#iphonequestions'.
I'll make this quick because I'm tweeting from an iPhone, but will the battery lif #iphone6questions— Moose Allain (@MooseAllain) September 9, 2014
Will the charger with it survive a whole week??? #iphone6questions— Arron Crascall (@arron_crascall) September 9, 2014
#iphone6questions Someone, please reassure me that technology is not the new religion.— Wayne Freedman (@WayneFreedman) September 9, 2014
Will autocorrect stop being a ducking aunt? If not, it can go to He'll. #iPhone6questions— Amanda (@Pandamoanimum) September 9, 2014
Will it work in an independent Scotland? #iphone6questions— The Sunday People (@thesundaypeople) September 9, 2014
But broadcaster, self-confessed 'Apple fanboi' and all-round tech geek Stephen Fry was quick to defend Apple from the inevitable "haters".
Just adore apple-haters. Imagine if people talked about Mercs or BMWs with such spewing bile! Funny old world. Apparently legal not to buy 1— Stephen Fry (@stephenfry) September 9, 2014
And others, like actress Mia Farrow, were simply unashamedly excited by the prospect of shiny new devices.
I'm a little overexcited about the Apple announcement.— mia farrow (@MiaFarrow) September 9, 2014
I can't even be arsed to be cynical. I want the new iPhone.— Pete Fraser (@petefrasermusic) September 9, 2014
The Verge tech website reporter Tom Warren reminded users that Apple is "revolutionary".
Apple invented the live blog just like it invented tablets. It’s revolutionary stuff guys— Tom Warren (@tomwarren) September 9, 2014