Micromax android one is the my second best smartphone, I am very happy with this product, this device worked perfectly for me and the some features of this device are listed and some prons and cons also: -
Main functions: -
1) Ram: -1GB( Good for multitasking)
2) Processor: -1.3 gHz quad core
3) Internal memory is 4GB
4) Screen size 4.5 inch
5) Android OS 4.4.4 kitkat
6) Camera: -5mp( Primary) 2mp( front)
7) Dual sim
8) Network: -2G, 3G
Prons: -
1) Processor is good, I am tested some of the games like GTA san andreas, Asphalt 8, WWE immortal( No lag was found, runs perfectly)
2) Android version 4.4.4 upgradable to lollipop.
3) Camera is also good
Cons: -
1) Network coverage only 2G, 3G no LTE.
2) Screen size is small, 4.5 is not sufficient for gamers.
Overall it is a good mobile, I would recommend you to buy this phone.