Type of Panel:21.5” LCD panel Display size(mm):476.64×268.11（H*V） Max resolution:1920*1080 Display color:16.7M Pixel Pitch(mm):0.4845(H)×0.4845(V) Brightness:450cd/m2 Contrast Ratio:1000:1 Visual angle:178°/178° Response time:5ms Horizontal frequency:50-60KHZ Vertical frequency:50-60KHZ IP:IP54 Front Panel:Toughened glass or acrylic,High transparency Frame:metal