Using hard plastic material shell, sturdy and reliableProfessional integration of arithmetic circuits and vibration sensors, and a fully enclosed noise reduction and sound insulation cavityThe interior is composed of microelectronic circuits, which will not cause magnetization after testingProduct Name: Computer Calibration InstrumentDial measuring diameter: 1.8cm-6cmMeasurement: six-direction measurementBattery: 3.7V rechargeable lithium battery can be used for 3-4 months on a single chargeSize: 9*5.5*6cm/3.5*2.2*2.4inchSupport: connect to mobile phones, tablets, computersFeatures: high precision, anti-interference, compact and portable, easy to go out[SHOPPING LIST]Computer calibration instrument*1Data cable X1[NOTICE]Due to different displays and lighting effects, the actual color may be slightly different from the picture.Due to manual measurement, please allow a deviation of 1-3cm.