Sinn U200 W EZM 8, Manual, Page: 19 / 33

19
TEGIMENT Technology and the black hard coating
Because the captive diver's bezel is subjected to extremely tough conditions,
we have additionally tempered the german submarine steel using tegIment
technology. In our diving watches with the black hard coating, this tempering
with the tegIment technology forms the basis for the application of a pvd
coating. we use the black hard coating only in conjunction with the tegIment
technology. this means that the 2,000 hv (vickers hardness) coating is
applied to the tempered steel (1,500 hv) to prevent cracking (the "eggshell
effect").
The captive diver's bezel
to protect against unintended maladjustment, the diver's bezel may only be
turned counter-clockwise and can easily be operated with diving gloves.
Because the bezel plays a vital role in time measurement, it is an extremely
sensitive safety feature that's why we have protected our bezel against loss
with a special construction. our secure attachment differs significantly from
the conventional snap-in mechanism: loss due to unfortunate impacts is
practically impossible, because the captive bezel is securely fastened to the
centre section of the case.