IWC Schaffhausen AQUATIMER AUTOMATIC 3410 Mode D'emploi page 27

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R E A D I N G T H E T I M E I N T H E D A R K
The dial, the hands as well as the markings on the internal rotating
bezel of your watch have luminescent elements that allow you to
read the time effortlessly even in total darkness. The two lumines­
cent elements at 12 o'clock serve as a reference point.
M A R K I N G T H E S TA R T O F A D I V E
The triangle on the internal rotating bezel can be aligned with the
minute hand by turning the external rotating bezel. The desired
point in time (e.g. the time of entering the water at the start of
the dive) can be set in this way. You can read off the elapsed
time (e.g. the duration of the dive) on the internal rotating bezel.
For safety reasons, the internal rotating bezel can only be rotated
in an anticlockwise direction. The rotating bezel is indexed audibly
and perceptibly in one­minute steps, and it is also legible in the
dark thanks to the luminescent markings.
If you are planning to use the watch to time dives, you should
be a certified open water diver and have the water­resistance
of your watch checked regularly by an IWC service centre.
A Q U AT I M E R A U T O M AT I C