Motor equipped inside the watch winder will damage the watch by magnetic?
Non-magnetic motor is not available under existing electrical-motor technology. all electric motors are magnetic; the principle that governs the operation of every electri motor is a rotating magnetic field – that is what makes the motor operates. You may use telephone everyday. Interestingly you may probably wearing your watch on is just only inches away from the telephone handset which has both magnetic microphone and loudspeaker with substantially more magnetism than our micro motor. How come your watch is not affected? It is very simple. All modern watches are made of non-magnetic material: titanium, brass, stainless steel, etc. Consequently, they are non-magnetic and unaffected by close proximity to magnetic field. Ever if the watch is exposed to magnetic fields, it will not be damaged. Modern watches are designed to operate in magnetic filed as all quartz watches are driven by stepper motor.