There’s 2GB of RAM, 16GB of storage, Wi-Fi b/g/n, Bluetooth 4.0, GPS, FM radio, and USB OTG. Both SIM slots support 4G LTE on Band 3, 5, and 40. However, VoLTE support seems to be missing.
The OS is smartly designed, as only part of the launcher and a few apps(like SMS) are customised, while the rest is pretty much stock Android. During initial setup, you can select your primary language and your mother tongue(or any other language you’re comfortable with), and easily swap between the two.