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How long does the accumulator of the GPS watch last?
The service life of the accumulator is of 14 hours, when using the GPS, and of
approx. 1 year in time mode.
It doesn’t show my current speed, why?
Check if you receive enough GPS signal.
Why does the GPS watch show a certain speed, if I do not walk/I am not on
the move?
This depends on the exactness of position determination, measurement
intervals of the GPS respectively. See next paragraph, the exactness of the
GPS watch respectively.
How exact does the GPS watch show?
The exactness depends on the reception of the satellites. The indication of
exactness is based on the so-called CEP 50% (Circular Error Probability). This
means that, in case of a very good reception from the satellites 50% of all
measurements will be in a circle with the indicated half-line of 3 m. It also
means that half of the measurement points are outside this half-line. Further,
however, 95% of all the measurement points are in a circle with double half-
line. Almost all the points are inside a circle with a half-line of 6 m, in case of
a good reception of the satellite.
Charge of the accumulator of the GPS watch does not work, why?
Make sure the USB port in which the GPS watch is inserted is power carrier.
The installation of a driver for charging the accumulator is not necessary.
If problems appear when charging the GPS watch, check the contact pins on
the back of the watch. If these were soiled with sweat deposits and skin
scales, clean them with a sharp metallic object (e.g. tweezers).
