One card full solution. I have this POTM card and feeling almost relaxed of short of money as previously at many points.
What is to be taken care most is, must check either your required currency is listed in all thirteen exchangeable , rest everything is fantastic.
Very similar to credit card once receive ,normally delivered within 5 to 6 days with activation guidance.
This can be used almost very big part of world, so I can say this is very useful.