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 + 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. Specifications: Condition: Brand New Material: Plastic Color: White Package Size: Approx. 23.5 * 19.2cm / 9.3 * 7.6in Voltage: 90-240V Package List: 1 * Manual 1 * Timegrapher 1 * Timegrapher Sensor 1 * Plug 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.