1. Equipped with clear bright LCD, clear image and different color indicate the trajectory of the file clearly. 2. Based on advanced multiple frequency network impedance measurement technology and automatic calibrating ensures the measurements are accurate. 3. The accessories of the “WOODPEX III” can be autoclaved under the high temperature and high pressure. Avoiding cross infection effectively. 4: The battery is rechargeable, don’t need replace the battery repeatedly. 5: Folding, easy to adjust the visual angle.