Multiple measurement functionsArea, length, volume, angle, continuous measurement, Pythagorean method three points, 100m 328ft measuring ranges; addition and subtraction; automatic horizontal measurement, automatic vertical measurement,automatic calculation of circumference. Real time High precision technologyWith laser precision optical lens technology, accuracy ups to 2.0mm, laser emission and reception double enhancement.Fast measurement in 0.2 second.A new generation of phase optics with good linearity, precise and stable. Unit switchable and Data StorageLCD 4 line display, the unit switchable among M/In/Ft/Ft+In for free adjustment.Up to 30 sets of data memory;auto shut down after 180s Real time High precision technologyWith laser precision optical lens technology, accuracy ups to 2.0mm, laser emission and reception double enhancement.Fast measurement in 0.2 second.A new generation of phase optics with good linearity, precise and stable. Unit switchable and Data StorageLCD 4 line display, the unit switchable among M/In/Ft/Ft+In for free adjustment.Up to 30 sets of data memory;auto shut down after 180s without any operation to save power. IP54 and Bubble LevelPhysical horizontal bubble, clearly observe the horizontal and vertical status, improve measurement accuracy, IP54 level means good waterproof and dustproof feature. More durable and convenient to work in special environments. Large backlit screen and mute settingLarge backlight screen provides you with a better visibility in dark areas; Mute setting allows you turn on or off the measure beep at your will, suitable for using in library, classroom and other quite places What you getLaser Distance Meter; 21.5V AAA Batteries; User Manual; Hand Strap; Package Box; One year warranty.this laser distance meter is small and light, easy to keep in any pockets, the laser distance measure tool is a great addition to your toolbox