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 1.5V×2(not included)        Specifications    115*50*26mm