Micromax Canvas 4 vs Micromax Canvas A116 HD. List the differences?

Hi, the mobile phone which is very hot in the smartphone industry now a days is from micromax. The name of the mobile phone is micromax canvas 4 and i want to know that what are the basic differences which we able to see in micromax canvas 4.

Please tell the details.

There are lots of features available in this new smartphone and since it will come with a price around 15K and 20K.