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: Sunmi custom RAM: 2 GB Internal storage: 16 GB Built-in thermal printer Printing paper width: 80 mm Supports Wi-Fi wireless connectivity Supports Bluetooth technology Includes an Ethernet wired network port Includes 5 USB Type-A ports Includes a dedicated cash drawer port Includes a serial port Includes audio output and jack Supports external Micro SD memory card installation Maximum external memory: 64 GB Two-year warranty from STC Shipping to all cities in the Kingdom, by the grace of God.