Main Features
1. Angle display instead of acrylic bubble.    
2. Lithium battary for long-hour work time(Type-C USB).
3. Distance/ Area/Volume measurement.    

4. Pythagorean proposition indirect measurement.
5. Single/Continuous measurement.    

6. Addition/ Subtraction Measurement.                                                                 

7. Backlight function, Units and benchmark selectable.