1. Even when there are some remnant blood and some solution, the unit can get precise data.

2. Double super large LCD display, can display how deep the apex file has probed into the root and digital display the distance from apex file to the apex at the same time, show the apex length directly and clearly.

3. With sonar alarm, remind timely, more humanized.

4. Easy to operate, efficient, accurate, convenient, and without X-ray radiation.

5. Precision: 0.1

6. Hooker and the wire can be sterilized with high temperature, avoid cross infection