Building the first truly beautiful smartwatch takes time. As one Motorola exec jokes to us, "it's like trying to fit a square peg in a round hole". But finally the Moto 360 is ready.

Black leather and grey leather strap editions of the sexiest smartwatch so far are going on sale in the US today and coming to the UK in early October. The price? £200. Yes that's quite a bit more than an LG G Watch or Samsung Gear Live but the £200 does include a bundled wireless charger and anyway, once you've clapped eyes on the 360 there's no going back to square wristwear.

Those gorgeous stainless-steel strap editions are planned for a release later in the autumn, with no UK pricing yet but a US$300 pricetag in the US. That's US$50 more than the leather-strapped watches, so expect to pay a bit more for the metal band in the UK too. Motorola also told us that extra leather bands will cost US$30.

In the UK, stockists will be Amazon, Tesco, John Lewis, O2 and Phones4u at launch, so there should be plenty of chance to see a 360 in the flesh before you buy.

Now, how about some specs? After months of waiting plus a couple of leaks courtesy of Best Buy, Motorola is doing the honest thing and telling us exactly what's inside.

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