Measurement Accuracy:±2mm Size:113mm*49*23mm Model Number:LJ120M Power Type:Battery-Powered Origin:Mainland China Certification:NONE The maximum measuring range:100M.120M Measuring accuracy:±2mm Measuring units: m/in/ft /ft+in Laser class: Class 2 Laser type:635nm, Area, Volume Measurement: Yes Secondary Pythagorean:Yes Indirect Pythagorean theorem: Yes Addition and subtraction: Yes Continuous measurement: Yes Min./max./value: Yes 4-line display with backlight: Yes Single distance measurement: Yes Button: Soft rubber buttons Operating temperature: 0-+40 degree Storage temperature: -20-+65 degree Battery type: AAA 2 X 1.5V（Battery Not Included )