What's with 50Hz and 60Hz?
Well the answer is simple, 50Hz simply means voltage alternates 50 times per second and 60 Hz simply means voltage alternates 60 times per second. 50Hz is what we get in most of Europe and Asian countries including India, where as 60Hz is the normal frequency for Americas.
So,if you are traveling abroad its always better to know what's the voltage and frequency supplies in that particular country. Click on this link and get your self prepared to charge your gadgets