Pyle Handheld Laser Distance Meter - Digital Distance Measuring Range Finder with LCD Display (300' ft.) Laser Distance Meter Ranger Finder - Instant, Accurate & Reliable Results - Extra Bright Back-Lit LCD Display - Wide-Range &d Bright Visibility in Any Environment Indirect Measuring with Pythagorean Mode - Addition/Subtraction Function - Continuous Measuring Function - Selectable Distance Units of Measure Auto Off Power Saving Mode Technical Specs: - Measuring Range: Up to 300' ft. - Accuracy: +/- 0.06'' -inches - Laser Class: Class II Output Power: &lt;4.5mW - Selectable Units of Measure: Meters/Feet/Inches - Marine Grade Rated Housing, IP-4 Rated Housing, Dust and Splash Proof Battery Operated, Requires: (2) x 'AAA' Batteries, Not Included - LCD Screen Display Size: 1.4'' x 1.2'' -inches - Total Unit Dimensions: 4.6'' x 2.1'' x 1.1'' -inches