Screen Size: 21.5 inch Screen Type: LCD Display / LED Optional Resolution: 1920 × 1080 Full HD Touch Screen: 10-Point Capacitive Touch Material: Metal Case + Toughened Glass Panel CPU Options: RK3566 Quad Core / Intel Core i3 / Intel Core i5 / Intel J1900 Operating System: Android / Windows / Linux RAM: 2GB / 4GB / 8GB DDR3 Optional Storage: 128GB Optional Components: QR Code Scanner / Card Reader / POS System