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JI CHANG-WOOK

Actor & Musical Star

"Rado has a diverse many sided image. It’s formal and rigorous, but also very active and casual. As an actor, I also have to show different aspects of myself. In that sense, I feel we are very similar, Rado and I."
Ji Chang-wook Rado True Square Open Heart live reveal in Bangkok

Soon Ji Chang-wook x Rado – Live from Bangkok
Rado × Ji Chang-wook Youtube Live Reveal

A Timeless Moment Live

Rado unveils its newest creation the True Square Open Heart Limited Edition × Ji Chang-wook.
Join us live on Youtube from Bangkok Rado event ! To discover his limited-edition watch a reflection of innovation, emotion, and modern artistry. But also spend some time with us and Ji Chang-wook.

🗓 Date: November 20, 2025 - 06 PM Local time
📍 Location: BANGKOK, Eden at centralworld
▶️ Watch Live on YouTube: Rado Official Channel

Ji Chang-Wook is a household name in South Korea and beyond. His breakthrough came when he played a Korean-American speed skater in Smile Again, a wildly popular TV series that aired every weekday in prime time – for 159 episodes. The award-winning actor has since played a wide variety of contemporary and historical characters across a broad range of film, television and web series formats.
Acclaimed for his performance as Emperor Ta Hwan in the Kdrama Empress Ki, he’s also slipped easily into heart-throb roles in romantic comedy series such as Backstreet Rookie and Lovestruck in the City. Fame has carried him far, especially since starring in the hit Netflix series, The Sound of Magic. Clearly a very busy young man, he has nevertheless managed to appear frequently in musicals and music videos, and has recorded a number of OSTs (Original Sound Tracks).
True Square Open Heart x Ji Chang-wook
True Square Open Heart x Ji Chang-wook
Every Rado creation begins with a spark, a question of how precision can feel alive. When Ji Chang-wook first visited Rado, he discovered more than a timepiece. He found a world where design, craft, and emotion move in perfect cadence where light reveals structure and mastery becomes feeling. The True Square Open Heart x Ji Chang-wook embodies this shared curiosity: a dialogue between the artist and the watchmaker, between heart and mechanism.
Ji Chang-wook portrait wearing the True Square Open Heart
A Timeless Connection
The True Square Open Heart reveals what lies beneath the surface the heartbeat of Swiss watchmaking framed in monobloc high-tech ceramic. Through the open dial, the mechanical movement comes to life, its ruby bearings glinting like sparks of motion against the clean geometry of the square case and it's movement. Every rotation of the balance wheel reflects Rado’s mastery of both form and function, a seamless fusion of innovation, material artistry, and enduring elegance.
Where craftsmanship meets talent

True Square Open Heart x Ji Chang-wook

A timepiece of exquisite character and undeniable charm, like the man himself, and a true inspiration from any angle.

The Full Rado Experience

Rado CEO Adrian Bosshard invited global brand ambassador Ji Chang-wook to Switzerland for a tour of Rado's headquarters.
Learning about the mysteries that make Rado the Masters of Materials, he got to test out Rado's high-tech ceramic's scratch-resistance for himself and see the Rado difference.
Captain Cook High-Tech Ceramic Skeleton

The Fiery New Shades of Exploration

Ji Chang-Wook is wearing the renowned Swiss watchmaker’s captivating Captain Cook High-Tech Ceramic Skeleton. The actor’s new watch premieres in the Swiss brand’s hit Captain Cook collection under the motto, “The Art of Skeletonization”. Inside is the new Rado automatic R808 skeleton movement with smart new geometry and components shaded in different tones. Equipped with an anti-magnetic NivachronTM hairspring, the precise mechanical movement can also be admired from the back through a transparent sapphire crystal.

DiaStar Original Skeleton

The aesthetic “bang” of this new DiaStar Original Skeleton watch goes beyond the yellow-gold coloured case. It also features Rado’s much-celebrated Art of Skeletonization, which means that the innovative anthracite-grey coated version of the R808 automatic calibre is on full display through the sapphire crystal, both on the front and back of the case. The “Rado” and “DiaStar” logos are creatively printed on the inside of the front crystal. The movement, which has been thoroughly tested in five different positions, is equipped with a Nivachron™ balance hairspring, making it particularly resistant to the influence of the magnetic fields that are increasingly a part of our daily lives. The R808 movement offers a power reserve of 80 hours. The watch is water resistant to 10 bar / 100 metres.

We could make it, so we did it

We could make it, so we did it

DiaStar Original Skeleton

The DiaStar Original Skeleton features another variant of the high-quality R808 automatic calibre, anthracite-grey coated and complemented by various elements in its workings, for a lovely visual dance of contrasts. Thanks to sapphire crystal windows on both front and back, the automatic movement can be appreciated in full technical elegance, providing 80 hours of power reserve. An anti-magnetic Nivachron™ hairspring ensures that everything stays extremely precise and reliable, in a movement that has been tested in a full five positions. Its open structure, and the impressive R808 skeleton movement give a lighter, airier note to the new DiaStar Original, a perfect design counterpoint inside the visual frame created by the Ceramos™ bezel.