1-Compact and rugged design features large display. 2-Multiple wide measuring ranges: Model EA30 – 40,000Fc in 4 ranges and 400,000Lux in 5 ranges Model EA31 – 20,000Fc in 4 ranges and 20,000Lux in 4 ranges. 3-Data hold freezes reading on display. 4-MIN/MAX readings. 5-Zero function. 6-Cosine and color corrected measurements. 7-Low battery and over range indication. 8-Auto power off to save battery life. 9-Utilizes precision silicon photo diode sensor with 3feet coiled cable for easy storage. 10-Completed with a built-in stand, remote sensor with protective cover, protective rubber holster, and 6 AAA batteries. Made In USA..