Advantages:
***  Best Equivalent of Topcon CL-300 ***
1.   Faster measurement speed.
2.   High measurement accuracy, especially for small-scale lenses such as + -0.12 and + -0.25
3.   High progressive speed and accuracy.
4.   Dark polarized sunglasses and colorful mirror can be accurately measured.
5.   Using a capacitive touch screen.
6.   It has a USB port, and software can be upgraded online.