can a Hong Kong product be used in Europe

hello again. sorry. im in Norway. i dont know much about this, but i was sertain i read 50-60hrtz on a product once. but that might be it. maybe the product could accept both 50 and 60. hope that you are right so i can use the Hong Kong stuff here.

If the device uses a DC motor or has no motor, frequency won't matter. If the motor is AC then frequency will matter.

Isn't the frequency in europe 50Hz anyway - if so, you can just change the cord or get an adapter for your country. As far as 50 vs 60 Hertz, a turntable that uses a AC Motor wont work. But many other electronics work ok with either 50 or 60 Hz. A Power Transformer that is rated at 60Hz will draw more current at 50hz because of less inductive reactance.

A turntable with an AC motor will work but the speed will be different. A different size pulley or a frequency adjustable power supply such as VPI's will fix it.