It runs based on Android 4.4. v Kitkat with MIUI 6 and 1.2 GHz Quad Core Qualcomm 8228 Snapdragon 410 Processor. It offers many features like 1 GB RAM, 8 GB Internal Memory, SD Card expandable up to 32 GB, Bluetooth, Ambient Noise reduction mic etc.
Click Here for Xiaomi Redmi 2 specifications