Dental Apex Locator I-461: Color LCD screen, clear image, multiple colors clearly indicate the trajectory of the needle in the root canal 2: Basic multi frequency independent network measurement technology, automatic calibration ensures the accuracy of measurement 3: Frustration clip, lip hook and probe Can be sterilized by high temperature and high pressure to avoid cross infection 4: The battery is rechargeable, no need to replace the battery repeatedly 5: Foldable, easy