1Better Design: With aspheric optical focusing lens and dual light sensitive holes for enhanced reflected light reception and optical compensation. 2High 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. 3Useful 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. 4Good Material: The application of high strength ABS material ensures excellent durability for long use, and good protection on the laser measure. 5Easy Carrying: Designed to have a light weight and a compact size as well, the convenient carrying and storage enables simpler daily using.