The Lumia 820 is a smaller, more budget option. As such is has a smaller a 4.3in, 480 x 800 pixel Amoled screen, drops the optical image stabilisation of the Lumia 920's camera, and has a less premium build with a normal flat screen and non-unibody chassis.
It will come with interchangeable backs, available in seven colours - black, grey, white, purple, blue red and yellow, and have a microSD slot for expanding storage.
Other specs include a 1.5GHz dual-core Qualcomm Snapdragon S4 processor, 1GB RAM, 8GB of inbuilt memory, and the camera will shoot at 8MP with 1080p video.
Like the Lumia 920 the 820 will run the latest Windows Phone 8 software, which includes new Nokia mapping features and clever new camera lens apps, which let other apps tap into the normal camera interface.
Exact availability dates and prices haven't yet been confirmed but both the Nokia Lumia 820 and Lumia 920 will be arriving before the end of the year.