That was discontinued after just under two months due to poor reviews and some sort of regulatory issue in japan.

Its sales was suspended due to certification issue, but is now sold again. Initial price was too expensive but finally it's available at $270. https://iosys.co.jp/items/smartphone/balmuda/softbank/balmud...

Interesting, do you know if one can buy it without a contract internationally? I live in the EU and would be very interested in one.

I haven't used, but maybe buying via buyee would be easier. All of listed items are wihout contract. https://buyee.jp/category/yahoo/shopping/49331?query=balmuda...

Here's supported bands https://tech.balmuda.com/jp/support/phone/faq/network/48/