Features: 1. Accurant technology delivers fast, easy, and accurate measurements every time. 2. This handy tool is compact and offers length, area, and volume measurements (inches, feet, and metric units). 3. Measures and displays length, calculates and displays area. 4. Continuously updates readings as you move toward or away from the target. 5. Ideal for interior design, renovations, flooring and wall covering, property appraisal and valuation; fast, easy, and precise measurement, even at a distance. Specifications: Type: Infrared Distance Measurer Options: 40m / 60m / 80m / 100m (optional) Material: Plastic Measuring Range: 0.05-40m/60m/80m/100m (optional) Accuracy: ±1.5mm Laser Class: Class II Laser Type: 635nm, P＜1mW Measurement Data: Fore and Aft Data Units: Meters/Inches/Feet Area Measurement: Yes Volume Measurement: Yes Pythagorean Theorem: Yes Continuous Measurement: Yes Addition and Subtraction: Yes Timing Measurement: 5~60S Battery: AAA R03P UM-4 1.5V dry battery Operating Temperature: -10~45℃ Storage Temperature: -20~60℃ Size: Approx. 50mm / 2 inches, Approx. 120mm / 4.7 inches, Approx. 30mm / 1.2 inches Package List: 1 x Infrared Distance Measurer 1 x Carrying Case 1 x Neck Strap