Features: There are 4 different types, 40/60/80/100m, selecting based on your needs. The large backlight screen gives you better visibility in dark areas. Measuring distance, pythagorean, area,volume, height different, continuous measurement, addition and subtraction,etc. Switchable among for M/In/Ft for free adjustment. 0.5-1s fast respoanse, low battery indication, 30 groups data memory, powered by 3xAAA battery. Portable size and hard rubber body provide a good grip; Wrist strap lets you hold the meter steady and carry easily. Suitable for using in library, classroom and other quite places. Specifications: Material: ABS Accuracy:±1.5mm Response: 0.5-1s Type: 40/60/80/100m(optional) Size: 109x49x25mm/4.29x1.93x0.98in Unit: for M/In/Ft Package Includes: 1XLa-ser Measure 1XLanyard 1XPouch 1XUser Manual 1XPackage Box note: Please allow 1-3cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item.