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Rado True Round Secret 40mm High-Tech Ceramic Diamond Automatic Watch


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Item code: M138013

Out of stock

Ring Size Guide

Ring Size Circumference (mm) Ring Size Circumference (mm) Ring Size Circumference (mm)
J 48.7 P 56.3 V 64.0
K 50.0 Q 57.6 W 65.3
L 51.2 R 58.9 X 66.6
M 52.5 S 60.2 Y 67.8
N 53.8 T 61.4 Z 68.5
O 55.1 U 62.7
Ring Size Circumference (mm) Ring Size Circumference (mm)
I 48.0 R 58.9
J 48.7 S 60.2
K 50.0 T 61.4
L 51.2 U 62.7
M 52.5 V 64.0
N 53.8 W 65.3
O 55.1 X 66.6
P 56.3 Y 67.8
Q 57.6 Z 68.5

Please note that this is only a guide and will not take into account the style of ring. For example, if you are choosing a ring with a deep band width, you may need a larger size.

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Rado True Round Secret 40mm High-Tech Ceramic Diamond Automatic Watch (M138013)


A celebration of understated luxury and discreet elegance, this Rado True Round Secret 40mm High-Tech Ceramic Diamond Automatic Watch unveils a world of sophistication. Offering a glimpse of the quality Swiss-made automatic movement through the dial opening at 12 o'clock, this timepiece adds a touch of brilliance to every moment. 


At A Glance


  • Presented on a high-tech ceramic bracelet and fastened with a three-fold clasp with push button
  • 40mm high-tech ceramic and titanium case with PVD coating and 50m water resistance
  • Black skeleton dial with stainless steel hands and diamond hour markers
  • Sapphire crystal glass with anti-reflective coating on both sides
  • Powered by an automatic movement
  • 80 hour power reserve

Read more


Supplier Code R27107732
Range True
Strap/Finish Ceramic,Ion Plated/PVD
Strap Type Bracelet
Watch Movement Automatic
Water Resistancy 50m
Case Size (mm) 40
Dial Colour Black
Markers Diamond Dot
Stone Diamond
Stone Colour Clear
Total Diamond Carat Weight (ct) 0.12
Diamond Clarity VS-SI
Clasp Type Three-Fold Clasp with Push Button
Glass Type Sapphire Crystal Glass
Manufacturer Warranty 2 Years
Finish Polished

Please note: Rado watches will need to be sent away for alterations in non-stockist stores.

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