Dual System Windows 10 OS Intel core i3/i5/i7 option,   Memory 4G/8G/16G option Hard Disk: 128G/256G/512G/1T option Android OS Quad core, 3G RAM, 32G ROM, Android 8.0/9.0 version LCD Panel Size 55 inch/ 65 inch / 75 inch / 85 inch / 98 inch Available Panel Brand LG BOE AU (gauge A screen) type TFT-LCD S-PVA Resolution 3840 2160 (UHD) @60hz, 4K UHD screen Brightness 450cd/m ² Ratio contrast 2000:1 Visual Angle (horizontal/vertical) 178 /178 Response time 8ms Visual area(mm) 1649.7(W) 928(H) mm Color gamut (NTSC) 72% Backlight WLED display scale 16:9 Response time 8ms Life >60000H Infrared touch characteristic Touch the specifications Infrared touch frame glass 4mm tempered glass Glass transmittance > 88% (higher transmittance depends on glass surface treatment technology such as AR/AG) Object induction number (IR) Touch at 20 Number of infrared induction lines (W D) 32767 32767 Positional accuracy More than 90% of the touch area is 2mm The interface definition USB 2.0(Full speed) Touch the strength Zero pressure touch The light resistance It has light resistance Induction life 6 million times The response time ï¼?8ms The power supply mode Full duplex usb-powered DC +5V up to 500mA Switching power supply Power consumption (typical value) AC100-240V~(+/-10%),50/60Hz Standby power consumption 270W The power interface 1W Switching power supply European standard 220V two - phase three - wire system Mechanical specification parameters Shell material (face frame/back shell) Plastic/Sheet metal Shell color (face frame/back shell) black To protect the glass 4mm toughened glass/level 7 earthquake resistant The environment The speaker 2�?8�©/5W(built in) Support for input mode Stylus writes keyboard The attachment The user manual Manual, warranty card, certificate of conformity cable The power cord Others (optional accessories) Remote control, base/bracket, WiFi