,aspect=fill;Crop=(0,0,300,825),gravity=Center)
,aspect=fill;Crop=(0,0,300,825),gravity=Center)
,aspect=fill;Crop=(0,0,300,825),gravity=Center)
,aspect=fill;Crop=(0,0,300,825),gravity=Center)
,aspect=fill;Crop=(0,0,300,825),gravity=Center)
True Square Open Heart X Ji Chang-wook Limited Edition R27174712 38.0 mm, Automatic, 117.5 g
Korean actor and screen star Ji Chang-wook is a Rado global brand ambassador and co-designer of his own limited-edition True Square Open Heart. The elegant, matt black monobloc high-tech ceramic case holds a flat sapphire crystal glass with anti-reflective coating on both faces, offering illuminating views of the wide-open dial and its hour markers – 12 bright rubies with matching red Super-LumiNova® highlights on the hands. The black, open heart dial has nickel-coloured bevels and a fine, vertically brushed finish along with circular grain and Côtes de Genève decoration framed by a printed white minute track. The sandblasted titanium case back with smoked sapphire crystal presents the words LIMITED EDITION, ONE OUT OF 987, along with the Ji Chang-wook’s signature, all in white. This stunning new model is powered by Rado calibre R734, a 25-jewel, 3-hand automatic that exceeds standard test requirements and features an anti-magnetic Nivachron hairspring and a remarkable 80-hour power reserve. Water-resistant to 5 bar (50 m).
Variations
Five year warranty 
Free shipping & returns 
Swiss Made 
Secure payment Description
Korean actor and screen star Ji Chang-wook is a Rado global brand ambassador and co-designer of his own limited-edition True Square Open Heart. The elegant, matt black monobloc high-tech ceramic case holds a flat sapphire crystal glass with anti-reflective coating on both faces, offering illuminating views of the wide-open dial and its hour markers – 12 bright rubies with matching red Super-LumiNova® highlights on the hands. The black, open heart dial has nickel-coloured bevels and a fine, vertically brushed finish along with circular grain and Côtes de Genève decoration framed by a printed white minute track. The sandblasted titanium case back with smoked sapphire crystal presents the words LIMITED EDITION, ONE OUT OF 987, along with the Ji Chang-wook’s signature, all in white. This stunning new model is powered by Rado calibre R734, a 25-jewel, 3-hand automatic that exceeds standard test requirements and features an anti-magnetic Nivachron hairspring and a remarkable 80-hour power reserve. Water-resistant to 5 bar (50 m).
All Ceramic Watches
,aspect=fill;Crop=(0,0,300,825),gravity=Center)
38.0 mm, Automatic, 120 g
$4,500.00
,aspect=fill;Crop=(0,0,300,825),gravity=Center)
38.0 mm, Automatic, 118 g
$4,500.00
,aspect=fill;Crop=(0,0,300,825),gravity=Center)
38.0 mm, Automatic, 120 g
$4,500.00
,aspect=fill;Crop=(0,0,300,825),gravity=Center)
38.0 mm, Automatic, 116 g
$4,500.00
,aspect=fill;Crop=(0,0,300,825),gravity=Center)
38.0 mm, Automatic, 116.6 g
$4,500.00
,aspect=fill;Crop=(0,0,300,825),gravity=Center)
38.0 mm, Automatic, 117 g
$4,500.00
,aspect=fill;Crop=(0,0,300,825),gravity=Center)
38.0 mm, Automatic, 117 g
$4,500.00
,aspect=fill;Crop=(0,0,300,825),gravity=Center)
38.0 mm, Automatic, 118.5 g
$4,500.00
,aspect=fill;Crop=(0,0,300,825),gravity=Center)
38.0 mm, Automatic, 116.5 g
$4,500.00
Global features
Reference
R27174712
Case diameter
38.0 mm
Movement type
Automatic
Weight
117.5g
,aspect=fill;Crop=(0,0,300,825),gravity=Center)
Case
Diameter
38.0 mm
Thickness
9.7 mm
Bezel
Carat
Crown
Crown, High-Tech Ceramic
Caseback
Transparent sapphire case back, Titanium
Dial
Hands
Super-luminova® details
Gem-Set
12 Rubies - 0.56000 Carat
Movement
Movement type
Automatic
Caliber
R734
Power reserve
80 hours
Accuracy
Movement tested in 5 position
Balance wheel
Antimagnetic Nivachron™ hairspring
Bracelet
Bracelet color
Black
Clasp
3-fold, Titanium
With the busy festive season ahead, we’re here to ensure your shopping is effortless and enjoyable.
For orders placed by December 24, 2025, we’ve extended the return period to give you peace of mind. Purchases made from November 24 onwards can be returned until January 11, 2026.
For orders without engraving, make sure to place your order by December 17h to guarantee delivery by Christmas. Alternatively, head to your nearest store for in-person purchases.
,aspect=fill;Crop=(0,0,618,618),gravity=Center){kind=spacer}
The pursuit of happiness
For his very own limited edition, Ji Chang-wook chose twelve bright rubies with matching red Super-LumiNova® to mark the hours – evoking good luck and happiness in harmony with Korean cultural traditions. The matt black high-tech ceramic case and bracelet ensure extreme comfort for the wearer. This is a timepiece of exquisite character and undeniable charm, and, like the man himself, a true inspiration from any angle.
