Earth Esim offers several unlimited data eSIM plans for Japan that can be purchased for a set number of days, with validity ranging from 1 day to 60 days. All unlimited plans are marked as “Speed may be throttled” and include a maximum speed limit of 1000kbps for Japan‑only plans; the International variants allow up to 5000kbps. Because the plans are unlimited, the data allowance is not capped, but users should be aware that Earth Esim applies a Fair Usage Policy, which may reduce speeds after heavy usage. If speed restrictions are a concern, travelers can contact Earth Esim for confirmation of the typical amount of data available at normal speed.