This unit contains a Class II Laser with 1mW output 650ft Range Indoors and Outdoors at up to 1mm (1/16") Accuracy, For long distances and very bright sunlight we recommend to use the special integrated Long Range (LR) Mode IP65 Rated- water jet protection and dust tight, ISO 16331-1 Certified Bluetooth Version 4.0 includes Intelligent Endpiece Outdoor Pointfinder Camera w/4X Zoom Display Allows You to Target and Measure Items at Long Distances Outdoors Measures in Feet, Inches, Yards, Decimal Feet, Decimal Inches, Meters