Tm - Or Tm + Mode (Timer Count Down Or Up); Tm Mode (Trip Time Mode) - XLC BV-W17 Manual

5.3 TM - or TM + MODE (Timer Count Down or Up)

Timer Count Down and Count Up will depend on users' prior setting in Clock
Mode.
The timer will be in COUNT UP if setting is 0:00:00, or it will be in COUNT DOWN.
The TM+ will repeat with fl ashing digits if it reaches up to 9:59:59. The TM- will also
repeat with fl ashing digits when the time set has run out.
5.4 T. TM MODE (Trip Time Mode)
Trip Timer would operate automatically when the bike is in motion.
How to reset all data
Press and hold "SET" key for 3 seconds, all exercises results in displayer will return
to zero, except odometer.
9
OR
Set Ke y
3 Seconds