Laser Handheld Distance Meter Range:0.1 to 60 m ( 4 in up to 196 ft ) Measuring accuracy:± 1.5 mm ( ± 0.06 in ) Measuring units:m,in,ft Laser Class:Class 2M Laser Type:635 nm, < 1mW Dust Protect/Splash proof:IP 54 History measurement recodes:20 Keyboard Type:Soft-Touch Operating Temperature:0C   to  + 40C ( + 32F   to  + 104F ) Storage Temperature:-25C   to  + 70C ( -13F   to  + 158F ) Battery Life:up to 3,000 m easurements Batter ies:Type AAA 2 x 1.5V Autom. laser switch-off:after 1.5 min Autom. instrument switch-off:after 3 min Dimension:110 x 48 x 28 mm Weight with batteries:85