The world’s smallest size, You can attach the device anywhere (e.g. stand, apron, Dental Ruler, included package, etc.) It gives the best accuracy by using 3 frequencies for exact accuracy. You can check if the device is accurate with a calibration jig and calibrate the device yourself. The available working length is selected for user convenience, a rechargeable battery is applied, and USB power from a PC or mobile phone is connected. Better visible and better recognized, Controls the device by touch control, 3 display modes prepared for better user recognition; Can be used as a timer.