1.
Introduction
The
SPEEDWATCH
wireless
speed
computer
is
a
highly
accurate
means
to
measure
speed
through
water
of
any
low
‐
speed
watercraft
such
as
a
sailboat,
yacht,
kayak
or
small
powered
boats.
Designed
for
the
serious
racer
and
the
advanced
users,
the
SPEEDWATCH
gives
valuable
feedback
on
the
performance
of
your
watercraft.
The
small
impeller
is
placed
under
the
craft,
in
a
variety
of
mounting
possibilities.
When
your
boat
or
kayak
is
moving
through
the
water,
the
impeller
rotates
creating
a
magnetic
field
that
penetrates
through
hull
without
wires.
This
magnetic
field
is
received
by
the
sensitive
sensor
at
the
end
of
a
cable
on
the
transmitter,
which
is
placed
within
30
cm
from
the
impeller.
The
transmitter
then
sends
out
a
low
‐
frequency
radio
signal
that
is
received
by
the
display
up
to
5
meters.
The
signal
is
processed
and
displayed
as
instant
speed.
The
SPEEDWATCH
uses
this
speed
signal
to
calculate
the
instant,
balanced,
and
maximum
speed
as
well
as
the
trip
and
total
distance.
The
SPEEDWATCH
outperforms
any
GPS
with
regards
to
precise
speed
and
distance
measurement,
allowing
for
minute
changes
in
performance
to
be
registered
and
adjusted.
The
SPEEDWATCH
becomes
an
invaluable
tool
when
sailing
or
rowing
in
currents,
as
it
measures
true
speed
through
water,
rather
than
average
speed
over
land
like
a
GPS.
The
magnetized
impeller
requires
no
power
source,
the
transmitter
uses
a
9V
battery,
and
the
display
includes
a
long
‐
life
Lithium
battery,
good
for
hundreds
of
hours
of
use.
Functions
Speed
:
Instant,
balanced,
maximum,
average
Distance
:
Trip,
total
Chronometer
:
Automatic
or
manual
Countdown
Timer
:
10,
6,
5,
3,
or
1
minute(s)
Time
of
day
:
AM/PM
mode
Backlight
:
Red
backlight