Excellent features phone,
1- Removable Li-Ion 3300 mAh battery, ( you will never get 3300mAh Removable battery on any other Samsung mobile I think)
2- Android OS, v6.0.1 ( Marshmallow) also recent security update on October 2016.
3-Qualcomm MSM8952 Snapdragon 617 Exynos 7870 Octa-core ( 4x1.6 GHz & 4x1.0 GHz
4- 5.5 inches , Camera 13 MP, f/1.9 - pretty good clarity, microSD. Super AMOLED- ( Crystal Clear Screen) ,
5- Fast & Speed Internet
6- Battery life - Endurance rating 101h from gsmarena ( it seem excellent for me)