Another way in which the Series 10 beats the Ultra is charging time, and this is something that's worth expanding on. Apple says that the Series 10 can charge from 0 to 80 percent in just 30 minutes (as opposed to older models which achieve the same feat in 45 minutes, whereas the Ultra models get there in an hour).

The Apple Watch Series 10 is thinner, lighter, bigger, and more powerful, and the first time I've been tempted to upgrade in years.

Need protection for your Apple Watch Series 9? Here are the best Apple Watch cases to choose from for both the 41mm and 45mm versions.

At just 9.7 mm, the Series 10 is the slimmest Apple Watch to date and about 1 mm thinner than the Series 9. The aluminium case version also weighs 10 per cent less than the Series 9, and titanium cases weigh almost 20 per cent less than stainless steel.

The latest smartwatch out of Cupertino delivers some fresh upgrades. Find out more in this Apple Watch Series 10 review.