Features: Fast, Precise Measurement: digital laser distance meter, designed with two bubble levels, extremely accurate to measure distances in long range, quick to display the measurements on screen. Multiple Measuring Modes: various modes--area, distance, volume, pythagoras, continuous(max/min value), add/subtract measurement, meeting different demands; unit switchable. LCD Display & Mute Setting: large backlit screen, clear to show power, data value, easy to read and record even in darkness; the measure beep, available to be turned on or off. Good Use: class II laser distance measure, less than 1mw, safe; auto laser output off with 20s non-operation, auto shut down with 150s non-work, energy-saving; up to 99 groups data storage. Light Weight & Pocket Size: the meter, made of selected electronic parts and solid durable shell, comfortable to grip, small, light, portable to anywhere, very suitable for home, construction, industries, etc. Specifications: Material: plastic + electronic components Main color: black and red Measuring range: 50m / 100m (optional) Measurement accuracy: ± (2.0mm+5*10-5D) Continuous measurement: √ Area measurement: √ Volume measurement: √ Pythagoras measurement: √ Add/Subtract: √ Max/Min value: √ Self-calibration: √ Laser type: class 2, 630-670nm,