The 920 is the flagship model and it packs a 4.5 inch curved touchscreen display, with a high definition resolution. It also has a PureView eight megapixel camera, which Nokia is comparing favourably to other snappers on rival phones.
The 820 has a smaller 4.3 inch touchscreen display and also packs an eight megapixel camera, although this time, the PureView branding is absent, which suggests that photography will not be as impressive.
Both models have dual core processors clocked at 1.5GHz and each will run Windows Phone 8 straight out of the box. At the launch event, various commentators were impressed with the slickness and consistency of the user experience, since Microsoft has worked hard to make WP8 even more seamlessly usable than both Android and iOS.
This is in part due to its minimalist design, that still focuses on Live Tiles, but since it can now stand toe to toe with its rivals and even outshine them, we could be entering the age of Windows Phone.