Many countries use electrical appliances that run on 220 volts or 240 volts and run at 50 Hertz. The USA uses electrical appliances that run on 110 volt 60 Hertz. 16mm Projectors made for 110 volt 60 Hertz will not work well in countries that use 220 to 240 volts 50 Hertz. It will not work well even with a transformer. If you buy a 16mm Film Projector, it is good to buy the right one for the country you plan on using it in. At the web site below, it will show you the countries of the world and what voltage, frequency or hertz they use.
http://www.philipallen.org/
and click on the link named Services to find the Voltages and Freqs Download link
Please visit my new Global Christian Video Directory at www.worldchristianvideos.org
It has a list of thousands of titles of Christian videos in over 1000 languages fo the world and where to buy them. This web site is an updated version of this site, the World Christian Video Directory