1.HIGH ACCURACY 4% of readings for 10000 Lux, 1000 FC; 5% of readings 10 digits for 400000 Lux, 40000FC 2.0.4 SECOND RESPONSE2-3 times sampling per second, Instantly to measure out how much luminosity intensity you're tting, No more guessing 3.WIDE MEASURE RAN This light meter can measure luminance at 0.01-400,000 Lumens, (0.01-40,000 Foot Candles), Which is much wider than the others. Resolution 0.01 4.EASY TO USEThe light sensor can be rotated 270º, so you don't need to turn around the light meter to measure luminosity intensity from different angles. Just rotate the sensor, and you can still read the illuminance at front Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.