Please call we also do installation and delivery at your door steps. system - operation system: android 9.1 - gpu: quad core - rom: 16gb - ram:1gb - extended usb: support usb disk up to 32gb display - touch screen: yes - resolution: 1024*600 screen: capacitive - built-in clock show real time wifi/3g/4g - connector: on the back - wifi: built-in wifi modem, su...