Oppo A37 have 1.2GHz quad processor with 5.1 Android lollipop version which is quite old
It comes with 2GB RAM and approx 1 GB RAM is free and other 1 GB RAM is taken by system software AND OTHER MEMORY( likes apps)
and internal memory is 16 GB which we can upgrade upto 128GB via a microSD Card.
As we all know oppo camera is good its 8 MP is good which gives you bright and good pics at all day time and 5MP camera is also quite good .
BaTTERY IS GOOD 2600mah(approx.) non removable battery. Non removable battery is better and great backup as compared to removable devices .