Digital Handheld Laser Distance Meter Used in civil construction, housing designing, decoration ... distance)6mm/ 10m ( 30mm / 40m )Illumination of display√measure applicationscontinuous,pythagoras,plane area,volume measurementaddition/subtraction√measurementsHorizontal,vertical ... 3V,2×AAA, Battery Life ,up to 5000 measurements auto power off after180secamblent tmperatureoperationg: 0°C~ +40°C , storage ...