KT M Mobile said on Monday it will run its partnership festival for unlimited data products in four Asian countries on its eSIM roaming service, mobi, until the end of this month.

The promotion covers unlimited data products for Japan, China, Vietnam and Taiwan. It extends the operating period to Aug. 31 from the initial plan to run until Aug. 15. For August, the unlimited data 3-day product costs 2,970 won and the 4-day product costs 3,960 won, both available at 990 won per day.

From Monday, Hyundai Marine newly joins, expanding purchasing channels following existing partners Lotte Duty Free and BC Card. The discounted products can be purchased through the mobi dedicated application and website, the KT M Mobile official website, and participating partners' websites.

Byun Seok-ju (변석주), executive director and head of the Business Operations Division at KT M Mobile, said, "To repay the support for the promotion, we decided to operate discounted products throughout August, the summer vacation season." He added, "We hope to provide overseas travelers with a more economical and convenient eSIM roaming experience."