jihyo twice

ZONE was released in CD format and is listed in the K-Pop genre.

The digipack edition includes: CD, cover, photo book, photo card (random 1 of 3), folded poster (random 1 of 2), a random sticker (1 of 3), a polaroid card, and a mini postcard.

The standard package is listed at 217 × 158 × 13.5 mm, and the digipack version is listed at 125 × 140 × 7 mm.

Across editions, photo card variants differ: the standard package lists photo cards as random 2 of 12, while the digipack lists a photo card as random 1 of 3.

None of the listed track titles include featured credits or duet labels—the seven tracks are shown without featured/duet attributions.

The album title is ZONE, and it is Jihyo's solo debut—Jihyo is a member of TWICE.