Feature: 1. The instrument will automatically calculate the rate deviation, amplitude, error, and display them by the data in real time. 2. The sampling period can be selected by 2 seconds, 4 seconds, 8 seconds, 12 seconds, 20 seconds, 30 seconds, 60 seconds, and the average value of corresponding period will be regarded as the exact value of the watch. 3. For the conventional, the instrument can automatically respond; for the special be-at, can manually selects. 4. The frequency diagram of the watch can be displayed on the LCD screen. 5. According to different watches, the instrument will automatically adjust the optimal signal level during the test. Specification: Specifications: Main material: metal Color: grey+black Measuring possibilities: rate deviation, amplitude, beat error Rate deviation measurement: the ranges of deviation is ±999 sec/day, accuracy is 1.0 sec/day Amplitude measurement: numerical display in degrees, resolution is 1°, measuring ranges is 100° to 360° Measuring for the error (frequency error): numerical display in milliseconds. Resolution is 0.1 milliseconds; the measuring ranges is 0-9.9 ms Measuring position: 1 to 6 positions Sampling periods: 2/4/8/12/20/30/60 seconds Lift angle: 30° to 70°, default is 52° Line length: 196 points Language: Chinese, English, Japanese Display dimension: 98 * 34mm / 3.9 * 1.3in Item size: 172 * 114 * 40mm / 6.8 * 4.5 * 1.6in Item weight: 1400g / 3.1lb Package size: 200 * 150 * 80mm / 7.9 * 5.9 * 3.1in Package weight: 1483g / 3.3lb . Package List: 1 * Timegrapher 1 * Microphone 1 * Power Cable 1 * User Manual