Main screen size 15.6 inches Main screen resolution 1920 x 1080 pixels Main screen is multi-touch Optional customer sub-screen size 10.1 inches Customer screen resolution 1024 x 600 pixels High-performance Qualcomm Snapdragon processor Processor type: Octa-core Operating system: Android version 7.1 System interface customized by Sunmi RAM: 2 GB Internal storage: 16 GB Built-in thermal printer Print paper width: 80 mm Supports Wi-Fi wireless connection Supports Bluetooth technology Includes an Ethernet wired network port Includes 5 USB Type-A ports Includes a dedicated port for the cash drawer Includes a serial port Includes audio output and jack Supports installation of external Micro SD memory card Maximum external memory: 64 GB