Name
Bc40B Digital bicycle computer
Feature:
power : 1.5V LR44
time : 24 hours display; distance: km/mile selectable
circumference setting :

10cm--239cm(silence data:208cm), the baby jogger tire  circumference is 16inch (41cm) please set the data as 16inch (41cm).
keys : Mode  Set

MODE key: Press mode key will display: ODO   DST    MXS    AVS   TM  CLK

ODO:---display the total distance 0.0--99999 km or Miles
        ---when digit get 9999.9 decimal point will lose, when digit get 99999, it will clear to 0.
DST:---display the total distance: 0.00999.99Km or Miles.
        --- when digit get 999.9 decimal point will lose, or can get 999.99, press 2 keys clear to 0 and record again.

MXS:---display the max speed.

AVS:--- display the average speed 0.0-99.99 km/h or m/h

TM:--- display the time for the distance 0:00:00-9:59:59,when the time get 9:59:59, the digit will clear to 0 and record again.

CLK:--- display time 00:00-23:59