O/S: Android 8.1 CPU: Quad core MTK6737,1.25GHZ (Q1,4G) /Quad core MTK6580,1.3GHZ (Q2,3G) RAM: 1GB for Q2 /2GB for Q1 Flash: 8GB Flash for Q2 / 16GB Flash for Q1 Display: 5.5" HD Screen, Highest Resolution 1280 x 720 Touch: Capacitive Multi point Touch Camera: 5,000,000 Fixed Focus Bluetooth: Bluetooth 4.0 WIFI: WIFI 802.11 b.g.n Speaker: 1W Single Channel Microphone: MIC Input Button: Power button, Scan Button Battery: 7.4V / 5000mAh Printer: 58mm Thermal Receipt Printer, Printing Speed 90mm/s, Work Life 50 Km Paper Roll: Max Diameter 42mm Power Adapter: Input:100-240V/1.5A 50/60Hz, Output:12V 1A Dimension: 209.2mm (L) x 87.4mm (W) x 51.7mm (H)