Features:Measuring Range: 80m， 60m， 40mQuick measurement of distance， area and volume with one button operationAutomatic calculation of area and volumeIndirect measurement by Pythagorean theoremMin/Max distance tracking (display value)Easy addition/subtraction of measurementLarge LCD with back-light and multi-line displayQuick measurement of distance， area and volumeSwitchable among metre (mm)， inch (in)， feet (ft)Easy targeting with bright laser pointerDisplay illumination and multi-line display(4 lines)Auto correction and error report technologyCompact and handheld design， portable and convenientWidely used in construction and industries， especially in large areas such as rooms， apartments， buildings， real estates， factories， warehouses， etcSpecifications:Distance Mesurement Precision: ��2mmMinimum Display: 1���Laser Level: 635nm Class 2Measurement Function: Length/ Area/ VolumeBattery: 2 x 1.5V AAA battery (Not included)Measuring Unit: mm/ in/ ftContinuous Measurement: YESArea Measurement: YESVolume Measurement: YESTriangle leg Measurement: YESAddition/ Subtraction: YESMax./ Min. Measurement: YESMax storage 99 UnitsBacklight YES Key Tone: YESAutomatic Infrared Off: 20sAutomatic Shutdown: 150sStorage Temperature: -20��-60��Operating Temperature: 0��-40��Storage Humidity: RH85%Size: Approx. 118 x 54 x 26.5mm/ 4.65" x 2.13" x 1.04"Package Included:1 x Digital Distance Meter1 x Carry Bag1 x Strap1 x User Manual