Seiko Oshi no Ko Ruby Model
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The Seiko Oshi no Ko Ruby Model is one of five character watches from Seiko's Oshi no Ko collaboration, alongside Ai, Aqua, Kana Arima, and Akane Kurokawa models. It reached JumpIchiban's storefront in September 2025, after Ai's December 2024 debut, at PREMICO's shared ¥59,800 (¥65,780 tax-in) price, limited to 2,000 pieces. The chronograph dial fades from magenta to pale pink, with a gold "first star" (一番星) at 12 o'clock for idol Ruby Hoshino and a subdial at 6 o'clock lettered "Ruby" over her "B-Komachi" idol-unit script and a small berry emblem. Gold chronograph hands complete the dial, and the caseback carries her signature and the ©Aka Akasaka x Mengo Yokoyari/Shueisha, "OSHI NO KO" Partners credit. It ships on a tan leather strap and is licensed merchandise, not a watch shown on screen. (Seiko; JumpIchiban)
Media relationships
Official partnerships
| Title | Year | Type |
|---|---|---|
| Oshi no Ko (2023) | 2023 | Anime |