1. Comprehensive display; 2. The screen flips; 3. Switch between high and low frequency acceleration measurement; high frequency (1KHz~10KHz)/low frequency (20Hz~1KHz) 4. Curve display; 5. File storage and viewing; 6. Power indicator light; 7. Dual measurement buttons; 8. Flashlight; 9. Screen brightness; 10. Choose Chinese/English; 11. Shutdown time setting; 12. Mechanical grade; Product Description Measuring range: Acceleration: 0.1~199.9m/s Speed: 0.1~1999.9m/s Displacement: 0.001~1.999 mm (PP) *Accuracy: ±5% *Measurement frequency: -- Acceleration: 10Hz~1KHz (LO); 1KHz ~15KHz (HI) --Speed: 10Hz~1KHz (LO) --Displacement: 10Hz~1KHz (LO) *LCD display: 3 1/2 digit display * Vibration pickup: piezoelectric ceramic accelerometer (shear type) *Working temperature: 0~40 degrees * Equipped with two probes (S and L) to suit different measurement requirements *Magnetic probe is provided for the situation where the hand is not easy to hold *Maximum hold function *Ambient temperature reading *C/F selection *Low battery indicator *Automatic shut-down *LCD backlight display *Maximum number of data storage groups: 7 groups