Ahead of the official unveiling of Microsoft’s first Lumia smartphone, leaked details of the Lumia 535 and Lumia 1330 has surfaced.

Potential features of the Lumia 535 include a 5" HD screen, 1.2GHz Snapdragon 200 chip, 2 GB RAM and internal storage of 8GB, reports WMPoweruser.

The dual SIM phone is expected to feature a 5 mega pixels primary camera and VGA front camera, and is likely to be available in black, white, gray, blue, orange, blue, green colour.

Another leak in China also suggests that the company could launch a phone/phablet featuring a 6" screen, similar to the Lumia 1320.

The phone might feature LED flash on top of the camera sensor, while also potentially featuring a dedicated physical camera button.