Laser Distance Meter Electronic Roulette Digital Laser Rangefinder Trena Metro Laser Range Finder Tape Distance Measurer.

Specification: The maximum measuring range: 40M/60M/80M/100M Measuring accuracy:±2mm Measuring units: m/in/ft/ft+in Laser class: Class 2 Laser wavelength and output: 635nm,<1mW Area, Volume Measurement: Yes Secondary Pythagorean: Yes Indirect Pythagorean theorem: Yes Addition and subtraction: Yes Continuous measurement: Yes Min./max./value: Yes Beeper: Yes 4-line display with backlight: Yes Single distance measurement: Yes Historical memory: 20 Button: Soft rubber buttons Operating temperature: 0-40 degree Storage temperature: -10-60 degree Battery type: 2x 1.5V AAA Battery.(Not Included) Auto laser off: 30 seconds Auto instrument off: 180 seconds