1: Pythagoras function for remote measuring of height or length2: Addition / Subtraction calculation and areaolume measurement3: Backlit display shows multiple readings.4: Audible alarm Name:Distance Meter with a measuring range of 0.05-40mLaser auto off:60sPower auto off:60sMeasuring distance:0.05-40mAccuracy:1.5mm/0.06inMeasurement units: m/in/ftLaser Type:Red laser, 635nm, Less than 1mW, Class IIOperating temperature:0-40,(32-104)Battery:Powered by 200ah 3.7vDimensions:100mm x 12.5mm x 32mmWeight:100gElectronic level:With levelColour:SilverMaterial:Aluminum Alloy+ABS Package Contents:1 x USB charging cable1 x Lanyard1 x Rangefinder1 x English instruction manual Only the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.