The Wristwatch Field Guide

Rado True Round Automatic Open Heart (black)

R27107172

The Rado True Round Automatic Open Heart (black) is a current-production dress watch with a black high-tech ceramic case. It measures 40.0 mm across, and is water resistant to 50 m. Inside is the Rado calibre R734 automatic movement, with ~80 h power reserve. Complications: Time only. Priced from $3,040. Brand origin: Switzerland.

Titanium and ceramic dress watchesCeramicBlackDisplay backUnder $5,000
Reference
R27107172
Type
Dress
Price
$3,040
Case diameter
40.0 mm
Thickness
–
Lug-to-lug
–
Water resistance
50 m
Weight
–
Origin
Switzerland
Movement
Automatic
Caliber
Rado calibre R734
Power reserve
~80 h
Complications
Time only
Material
Ceramic
Grade / type
High-tech ceramic
Colour
Black
Hardness
–
Construction
Monobloc
Surface treatment
–
Caseback
Titanium
Nickel-free
Not verified (clasp or buckle material not confirmed)
Bracelet / strap
Black high-tech ceramic bracelet with titanium 3-fold clasp
Matching bracelet
Standard
Crystal
Sapphire
Display back
Yes
Dial
Black, open heart
Lume
–
Availability
Offered
Status
Current
Medium confidence Verified Jul 2026 Source: Rado True Round Open Heart R27107172 (maker) Maker / listing ↗
Facts are free to cite with a link.
See it in the interactive guide

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Alternatives to the Rado True Round Automatic Open Heart (black)

Mühle-Glashütte Lunova Day/Date (Titanium)Mühle-GlashütteLunova Day/Date (Titanium)$2,69942.3 mm11 mm thickDresssame category · same style · similar price · similar sizeApiar Gen1.1 MR^2ApiarGen1.1 MR^2$3,60039.0 mm9.2 mm thickDresssame category · same style · similar price · similar sizeHolthinrichs Signature Ornament (titanium)HolthinrichsSignature Ornament (titanium)$3,80038.5 mm38 gDresssame category · same style · similar price · similar size
CitizenThe Citizen A060 Super Titanium (Washi Dial)$3,10040.0 mm12.2 mm thick86 gDresssame category · same style · similar price · similar size
TitanEdge UltraSlim Mechanical$3,30040.0 mm5.7 mm thickDresssame category · same style · similar price · similar sizeBotta CLAVIUS Cumulus (Tri-Titanium)BottaCLAVIUS Cumulus (Tri-Titanium)$2,34044.0 mm9.5 mm thick42 gDresssame category · same style · similar price · same movement

More titanium and ceramic watches from Rado

RadoTrue Square Automatic Open Heart$2,30038.0 mmDress
RadoCaptain Cook High-Tech Ceramic 43mm$2,80043.0 mmDiver
RadoTrue Square Automatic (black)$2,45038.0 mm9.6 mm thick117 gDress
RadoTrue Square Automatic (plasma)$2,45038.0 mm9.7 mm thickDress
RadoTrue Square Automatic (green)$2,45038.0 mm9.6 mm thickDress
RadoTrue Square Automatic Open Heart (rose)$2,95038.0 mm9.7 mm thick116 gDress

Frequently asked questions

What is the case material of the Rado True Round Automatic Open Heart (black)?

The Rado True Round Automatic Open Heart (black) has a black high-tech ceramic case with a titanium caseback. It is recorded at medium confidence pending a maker-stated material.

What size is the Rado True Round Automatic Open Heart (black)?

It is 40.0 mm in diameter, and water resistant to 50 m.

How much does the Rado True Round Automatic Open Heart (black) cost, and is it available?

It is current-production and lists from $3,040.

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