Feature: 1. Using piezoelectric ceramic acceleration sensor, vibration collection is more accurate. 2. Accurate value, three and a half digits display, can display the value more realistically. 3. Portable design, handheld body, more convenient to use, can be used in various situations. 4. Support temperature conversion and environment display, able to display modes according to different environments. 5. LCD screen display, data is clearly visible, it is more convenient to analyze and measure data. Specification: Item Type: Digital Vibrometer Model: GM63B Material: ABS Battery: 1 x 6LR61 9V Battery (Battery Not Included) Purpose: It can be used for speed, acceleration, displacement measurement and other vibration measurement needs. Acceleration Measurement Range: 0.1~199.9m/S² Speed Measurement Range: 0.1~199.9m/S Displacement Measurement Range: 0.001~1.999mm P-P Accuracy: ±5% Vibration Collection: Piezoelectric Ceramic Acceleration Sensor Acceleration Measurement Frequency Range: 10Hz~1KHz(LO) 1KHz~15KHz(HI) Speed Measurement Frequency Range: 10Hz~1KHz(LO) Frequency Range Of Displacement Measurement: 10Hz~1KHz(LO) LCD Display: 3 And A Half Digits Display Maximum Lock: Support Temperature Conversion: Support Environment Display: Support. Package List: 1 x Digital Vibrometer (Battery Not Included)1 x Vibration Pen1 x Vibration Length Probe1 x Magnetic Suction Cup1 x Manual1 x Carrying Case