Micromax Canvas A177 is now considered to be a old generation smartphone.it was launched in around 2014 and at that time it used to be a good competitor for the budget range smartphones.
It has a 5 inch screen , runs on Android jellybean v4.2, the processor is 1.2ghz dual core mediatek processor which is not sufficient for gaming.it has 1 gb ram and comes with 4GB internal storage, it has a 3000mAh Li-ion battery which provides a very good battery backup.
It has a 5MP rear camera which performs satisfactory and in front it has a 0.3 MP camera which does't performs good.
I'm calling it a old generation smartphone because it has Bluetooth version 3.0 which does not support BLE or which does not support any smart bands or smart watches.The range of sensors you will be getting with this phone is also very less it has accelerometer , light and proximity sensor only.
Talking about the performance of does not performs very good but delivers a manageable performance, as far as gaming is concerned then this smartphone can't run very heavy games in it. but it can run casual to light end games easily.
The best thing about this phone is the battery backup.It gives a very good battery backup under this price segment.
Now it is available under 8k but I would recommend you to buy another smartphone in this range.as it often lags also.