Features: 1. LCD screen shows the readings in real time. 2. Portable size, easy to install and operate. 3. Daily difference measurement: error measurement range is + 999 seconds / day, accuracy is 1 seconds / day. 3. Swing measurement: in digital display, the resolution is 1 degrees, and the measurement range is 100 - 360 degrees. 4. Polarization (frequency error) measurement: the value is displayed in milliseconds. 5. The resolution is 0.1 milliseconds, and the measurement range is 0 to 9.9 milliseconds. 6. The frequency diagram of the watch can be displayed in the LCD screen. 7. The instrument will automatically calculate the rate, amplitude, beat error and display them by data in real time. Specifications: Material: Plastic Color: White Package Size: Approx. 23.5 * 19.2cm / 9.3 * 7.6in Package List: 1 * Manual 1 * Timegrapher 1 * Timegrapher Sensor Note: Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. .