Features Better Design: With aspheric optical focusing lens and dual light sensitive holes for enhanced reflected light reception and optical compensation. High Accuracy: The laser measure has a wide measurement range of 0.05 to 50 meters, high in accuracy and efficiency and low in power consumption. Useful Memory: Able to store a mass of data up to 99 sets, which makes it much easier to check and compare to date and largely simplify your work. Good Material: The application of high strength ABS material ensures excellent durability for long use, and good protection on the laser measure. Easy Carrying: Designed to have a light weight and a compact size as well, the convenient carrying and storage enables simpler daily using. Specification: Item Type: Laser Measure Model: SW MS50 Material: ABS Battery: 2 x 1.5V AAA battery, without battery. Use: For distance detection. Distance Measurement Range: Approx. 0.05 ~ 50m / 0.16 ~ 164.04ft Distance Measurement Accuracy: ±(2mm+d*1/10000)* Laser Type Grade: Level 2, 630 ~ 670nm, <1mW Package List: 1 x Laser Measure 1 x User Manual 1 x Lanyard 1 x Storage Note: Do not put the tool in high temperature and high humidity environments for a long time. Package List 1 x Laser Measure 1 x User Manual 1 x Lanyard 1 x Storage