*Viewing area:92x42mm *More 40 patterns are available *Top quality with competitive price 2),Viewing area:92x42mm3),Light shade:DIN44),Dark shade:DIN9-135),Switching time from light to dark: 1/25,000s 6),Delay time from dark to light:Stepless adjustment 0.15s ~0.80s7),Sensitivity:Stepless Adjustment8),Power supply: Solar cell + Lithium battery