This mechanical watch tester is a highly accurate test instrument that allows watch manufacturers and watchrepair technicians to easily test mechanical watches. It adopts flame-retardant housing with high flame-retardant properties, stability, and wear resistance, with long durability. The 98x34mm LCD screen has a resolution of 192x64 pixels, and the data lines are During testing, the instrument automatically adjusts the optimal signal strength for different watches. It can automatically calculate the values of deviation, amplitude, and beat error, and display the data in real-time. The instrument can automatically detect watches with regular beat and can manually select watches with special beat. 2s, 4s, 6s, 8s, 10s, 20s, 30s, 60s test periods can be and the average value of the watch time of the period can be calculated. Measuring possibilities: rate deviation, amplitude, be-at 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 be-at 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: 2/4/6/8/12/20/30/60s Lift angle: 30 to 70, default is 52 Line length: 196 points Please note that the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! Plug Type :EU Plug,it applies to Indonesia, Germany, France, , Italy and so on. Voltage: AC100-240V Colour:black Material:Metal+Plastic Package Contents: 1 x Timegrapher 1 Cable Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.