I did not use the card in other countries, so I cannot vouch for it outside of Japan; however, there were very helpful instructions included in the packet on checking the amount of data remaining (though I also found that my iPhone's Cellular tab reset the "Period" for the data use for the new SIM card, so I mostly used that after checking a few times that they were the same).

After using all the bandwidth on one card, I used a second card and they both worked great

The SIM card was thus completely useless, and I wasted my money.

This SIM card worked very well for me in Japan

This SIM card worked very well for me in Japan

These sim cards work well, but the first time you configure one will most-likely be a little bit irritating