Feature:1. Suitable for almost all mechanical watches and can work on coaxial watches, which is very convenient and practical.2. Large LCD screen, better field of view, clearer reading of data, easier to operate, and improved efficiency.3. Multi purpose watch detector is very popular among professional watchmakers and watch collectors.4. Can accurately calibrate the watch time and make your watch time more accurate.5. Save time, no longer need to go to the watch shop to repair the watch, you can proofread the watch time at home.How to Use:Insert the wire on the measuring instrument into the display screen and tighten the screws, and the display screen can be operated normally after connecting the plug‑in wire at the same time.After connecting the microphone and power adapter, press the /OFF/START/STOP button to turn on the instrument, and then wait for testing. Place the watch horizontally on the microphone, and the crown must be in contact with the metal foil. After switching the test position, the finger must be removed from the watch and microphone. Flashing with LED "SIG." indicates that a signal is received from the watch.Specification:Item Type: TimegrapherMaterial: PlasticVoltage: 100-240VPurpose: To detect the movement speed, swing speed, and gear swing amplitude of the mechanical watch movementPackage List:1 x Plug Wire1 x D