Package List:1 * Handheld Vibration Meter,1 * User Manual,1 * Hanging Rope,1 * Portable Bag,1 * Probe Specification: Model: SW-65A Sensor: piezoelectric accelerated sensor Acceleration measurement: 0.1-199.9m/(peak value) Velocity measurement range: 0.1-199.9mm/s(real-time valid value) Displacement measurement: 0.001-1.999mm(peak-peak value) Accuracy: ±(5%+2dgts) Low frequency acceleration: 10Hz-1KHz acceleration: 1KHz-10KHz Velocity measuring frequency: 10Hz-1KHz Displacement measuring: 10Hz-500Hz Data Storage and refresh : Storage capacity: 200 sets, Data refresh time: 500ms Power: 2*1.5V AAA battery(not included), Battery working life: four hours without breaks Working and Storage temp: Working temperature: 0℃-50℃, Storage temperature: -20℃-60℃ Working and Storage humidity: Working humidity: 20%RH-80%RH, Storage humidity: 20%RH-80%RH Height sea level: <2000m Weight: Approx. 668g / 23.6oz Size: Approx. 176 * 54 * 25mm / 6.9 * 2.1 * 1.0in