Circumference = Diameter x 25.4 x 3.1416
2.Wheel size in MM
Circumference = Diameter x 3.1416
Second method:
Refer to the below data according
to the dimension marked in the
wheel.
2)
Function confirmation:
metric system/
i m p e r i a l s y s t e m , w h e e l
circumference size, clock setting
2.SET
1)
RESET:
Reset Distance/Riding time/ Average
speed/Max.speed
2)
To set values
：
In SET mode, press this
button to set values.
3.Back light(JS-212)
The back light button is in
the case back. It will light
for around 5 seconds by
every pressing. (FIG.M)
HOW TO MEASURE THE BIKE
CIRCUMFERENCE
Use tapeline to measure the diameter of front
bike wheel. Or
,
you can calculate the bike
circumference according to the wheel size
marked in bike instruction manual.
1.Wheel size in INCH
¢
10
11
FIG.M
Back light
16X1.75X2
20X1.75X2
24X1 3/8 A
24X1.75X2
26X1
26X1.5
26X1.6
26X1.75X2
26X1.9
26X2.00
26X2.125
26X1 3/8
47-305
47-406
37-540
47-507
23-571
40-559
44-559
47-559
50-559
54-559
57-559
37-590
1272
1590
1948
1907
1973
2026
2051
2072
2089
2114
2133
2105
Wheel Cir.
(
mm
)
Dimension marked in the wheel
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