Specification model S8B standard Measurement accuracy 1.5mm* Measuring range 0.05-40, 50, 60, 70, 100, 120m Minimum display 1MM Single measurement time 0.03-3 seconds Measurement unit M (meter)/ft (feet)/in inches/ft+in Laser class II Laser type 630-650nm Laser power <lmw Continuous distance measurement support Area measurement support Volume measurement support Pythagorean measurement support Area volume addition and subtraction measurement support Maximum and minimum measurement support Data storage maximum 20 groups Measurement base switching support Display backlight support Electronic angle optional Charging voice only supported for charging voice models LCD screen 2 inches, resolution 128*128 Buzzer support Charging model 1200Mah lithium battery Battery life 6000 measurements can be made; lithium battery can be recharged 500 times. Operating temperature 0-40 Storage temperature 20-60 Automatic laser off 15 seconds Automatic shutdown 45 seconds Battery Type: AAA Alkaline Battery 1.5V2(not included) Specifications 115*50*26mm