Features 1、Better Design: With aspheric optical focusing lens and dual light sensitive holes for enhanced reflected light reception and optical compensation. 2、High Accuracy: The laser measure has a wide measurement range of 0.05 to 40 meters, high in accuracy and efficiency and low in power consumption. 3、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. 4、Good Material: The application of high strength ABS material ensures excellent durability for long use, and good protection on the laser measure. 5、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 S4 Material: ABS Battery: 2 x 1.5V AAA battery, without battery. Use: For distance detection. Distance Measurement Range: Approx. 0.05 ~ 40m / 0.16 ~ 131.23ft Laser Type Grade: 630 ~ 670nm, <1mW Package List 1 x Laser Measure 1 x User Manual