Accurate hand-held laser distance meter Technical Parameters: Measuring range: 0.05 ~ 60/80/100 m | Measuring accuracy: +/-2 mm | Functions: Distance, Area, Volume, Continuous Measurement(Max/Min Measurement), Pythagorean Theorem(3), History Memory(50), Angle Measurement, Addition & Subtraction Function, Unit Setting(m,ft,in,00'00"), Measuring Reference(3), 4-Line LCD, Laser Off: 30s, Automatically Swtich Off: 3 min., Wavelength: 620~690nm, Batteries: AAA,1.5V*2 , Specification(cm): 117*52*27, Weight:100g | Guaranty: 12 months.