10.1" PCAP Touchscreen with ultra low profile design + 2.4" segment display, 3x USB, 1x RJ11 Serial, 1x RJ12 Cash drawer, 1x LAN, WiFi 2.4 & 5Ghz, 1x Audio jack, 57mm built-in printer (max dia. 50mm), Sunmi OS with Sunmi app store. Supports app install via APK. https://www.sunmi.com/en-US/d3-mini/