Nokia CEO Stephen Elop took to the stage at Nokia World in London to show off the new device, claiming the Lumia 800 was the "first real Windows Phone".
"The world is ready for something new, something more beautiful, and something more integrated," Elop said.
"We're signalling our intent right now, here today, to be today's leaders in smartphone design and craftmanship," Elop added.
Nokia said the handset was an evolution from the N9, only 0.48in thick, and featured a top-end Carl Zeiss camera. The Lumia 800 features a 1.4GHz processor with hardware acceleration, 16GB of storage, and comes with 25GB of free SkyDrive cloud-based storage.
It will come in cyan, magenta and black. Elop described the phone as "beautiful", pointing to the "inky black" 3.7in AMOLED display and speaker holes that are "individual milled to be as small as possible".
Nokia said the suggested price would be €420 (approximately AU$560), and arrive in the UK and other European markets in early November. "Boxes are moving on the trucks as we speak," Elop said.
Nokia is also unveiling a second handset, the "affordable" Lumia 710, with the same 1.4GHz processor as the 800.
It comes in black and white with exchangeable covers. The Lumia 710 has a suggested price of €270 (approximately AU$360) and will arrive in Hong Kong, Russia and India, Singapore and Taiwan by the end of the year, and "further markets" early next year.
Nokia also unveiled the Asha line-up, "smarter mobile phones" for emerging markets. The four devices range in price from €60 to €115 (AU$80 to AU$153).
Nokia said it will release a "portfolio" of new products to the US in early 2012.
Nokia unveiled three free apps unique to its Windows Phone handset. The first is Nokia Drive, free turn-by-turn, voice-guided sat nav that saves on roaming charges by only downloading the maps you need to finish your trip.
It also showed off Nokia Music, which lets users create playlists and save them for offline listening, and an ESPN sports channel app that's exclusive to Nokia handsets.
This article originally appeared at pcpro.co.uk