spirit level:

1.wavelength:650nm; 

2.output power of laser beam:¡Ü1mw;  

3.measure range of laser beam:3m-5m(in different brightness condition);

4.measure range of laser point:30m-50m(in different brightness condition);  

5.laser diade A(laser line):45¡ã 90¡ã 135¡ã 180¡ã; 

6.laser diade B(laser point):360¡ãroation;  

7.accuracy of the leveling vial:0.029¡ã(+_0.50mm/m);  

8.power:2*7batteries;

9.thickness: 1.6mm     600MM/24"