Viewing area: 98X44(3. 86"X1. 73") UV/IR protection: Up to shade DIN 16 at all time Light state: Shade DIN 4 Variable shade: From DIN 9 to DIN 13 Power supply solar cells, no battery change rquired Power on/off: Fully automatic Sensitivity: Can be adjustable Switching time: A)light to dark: 1/25000s B)dark to light: 0. 25-0. 35s at fast position 0. 60-0. 80s at slow position Availlable color: According to your requirment