Cinnamoroll (series)

Official Sanrio character artwork of Cinnamoroll, used here to represent the character generally, as neither Seiko's nor Sanrio's own announcements name a single anime or series.

Cinnamoroll is a Sanrio character created in 2001 with designs by Miyuki Okumura: a white puppy with a tail that curls like a cinnamon roll, long ears he can use to fly, and blue eyes. He has starred in his own manga, an anime film, and animation shorts. (Wikipedia) Seiko's collaboration watches, sold through its PREMICO character-watch imprint, credit both releases to Cinnamoroll generally rather than to any single work.

Watches

Seiko Cinnamoroll Collaboration Watch

Official product partnership, not an in-work appearance. Seiko released this ¥34,800 quartz watch on September 25, 2023, through its PREMICO character-watch imprint, limited to 2,000 pieces. It credits the release to Cinnamoroll generally, naming no single anime, film, or television work. (PREMICO; atpress)

Official partnership product · Not shown in the work

Seiko I.CINNAMOROLL Collaboration Watch

Official product partnership, not an in-work appearance. Seiko released this ¥39,800 quartz watch on June 9, 2025, through its PREMICO character-watch imprint, marking Sanrio's "I.CINNAMOROLL" sub-brand and limited to 2,023 pieces after that sub-brand's 2023 debut year. It credits the release to Cinnamoroll generally, naming no single anime, film, or television work. (PREMICO; atpress)

Official partnership product · Not shown in the work

UNDONE Cinnamoroll Starry Marshmallow COL-CIN-STA

Official product partnership, not an in-work appearance. UNDONE published this US$260 quartz chronograph on January 22, 2026 as the "Starry Marshmallow" of its official UNDONE × Cinnamoroll "Dreamy Star Collection" with Sanrio, a pale-blue constellation dial with Cinnamoroll at 6 o'clock, a TMI VK64 mecha-quartz flyback chronograph and a light-blue leather strap, sold with zodiac strap options under COL-CIN-STA-Z suffixes. UNDONE credits Cinnamoroll generally, naming no single work. (UNDONE)

Official partnership product · Not shown in the work

UNDONE Cinnamoroll Moonbeam Cuddle COL-CIN-MON

Official product partnership, not an in-work appearance. UNDONE published this US$320 automatic on January 22, 2026 as the "Moonbeam Cuddle" of the same official Dreamy Star Collection: Cinnamoroll on a crescent moon across a mother-of-pearl dial, a rose-gold-toned case with a white bezel, a blush rubber strap and a TMI NH35A automatic, a distinct design from the quartz Starry Marshmallow rather than a colourway. UNDONE credits Cinnamoroll generally, naming no single work. (UNDONE)

Official partnership product · Not shown in the work