This No.1900 timegrapher is a precise mechanical watches test instrument, it is used for multi-testing by watch manufacturers and watch technician. Specifications: Plug: EU-plug, US-plug, AU-plug (optional) Main material: ABS Color: grey 43;black Measuring possibilities: rate deviation, amplitude, be-at error of mechanical watches and diagram recording of the be-at noise. Rate deviation measurement: Measuring ranges: 999s/d or 99.9s/d Resolution: 1.0s/d or 0.1s/d Amplitude measurement: Measuring ranges: 100~360 Resolution: 1 Measuring of the be-at error: Measuring ranges: 0.0~9.9 ms Resolution: 0.1 milliseconds Lift angle: Measuring ranges: 30~70 Default value: 52 Measure positions: 1-6 positions Line length: 480 points Measuring times periods: 2/4/6/8/12/20/30/60 seconds Language: Chinese, English, Japanese Display: color LCD graphic monitor, 480*272 pixels Working environment: 10~40 Relative humidity: 0~80% RH Item size: 185 * 120 * 40mm / 7.3 * 4.7 * 1.6in Item weight: 337g / 11.9ounce Package size: 230 * 210 * 195mm / 9.1 * 8.3 * 1.6in Package weight: 1379g / 3.0lb Packing List: 1 * Timegrapher 1 * Timegrapher Sensor 1 * Power Cable 1 * User Manual