Vibration Meter, Accuracy +/-5 Percent, Acceleration Measurement - Minimum 0.01 g, Acceleration Measurement - Maximum 50 g, Number of Records Stored 10, Maximum Velocity Measured 999.9 in/sec, Minimum Velocity Measured 0.001 in/sec, Acceleration Max Resolution 50 g, Displacement Max Resolution 0.01 mi, Maximum Displacement Measured 20,000 mi, Minimum Displacement Measured 0.01 mi, Velocity Max Resolution 0.001 in/sec, Auto Power Off Yes, Batteries Included Yes, Alert Type Vibration