LASER TECHNOLOGY: The laser range finder kit uses precise laser technology to provide fast, simple, and accurate measurements every time it is used. CONVENIENT TOOL: Digital laser rangefinder, this handy tool is compact in size and provides length, area and volume measurements (inches, feet and metric units). FUNCTION: Compact laser measuring tool measures and displays length, calculates and displays area. FEATURE: Laser tape measure, displays continuously updated measurement values when moving to or out of target. APPLICATION: The laser measuring tool is very suitable for interior decoration, renovation, floor and wall covering, real estate appraisal and appraisal, a fast, simple and precise measuring means even within walking distance. Element type: infrared range finder Options: 40 meters Material: plastic Measuring range: 0.05-40 meters / 60 meters / 80 meters / 100 meters (optional) Measuring accuracy: 1.5 mm Laser class: Class II Laser type: 635 nm, P 1 mW Measurement reference: front and rear references Unit of measurement: meter / inch / foot Surface measurement: Yes Volume measurement: Yes Pythagorean theorem: Yes Continuous measurement: Yes Addition and subtraction: Yes Time measurement: 5 ~ 60S Battery: AAA R03P UM-4 1.5 V dry battery Working temperature: -10 ~ 45 Storage temperature: -20 ~ 60 Size: Approx.50mm / 2inch Approx 120mm / 4.7inch Approx . 30 mm / 1.2 inches Package list: 1 x infrared range finder 1 x portable bag 1 x sling Note: it does not include other things, the color is based on the first picture, and other pictures only show the effect Due to the differences between different monitors, the picture may not reflect the actual color of the item. Due to manual measurement. Please allow deviation. Thank you