According to Davide Cassani, ex-Pro and cycling commentator of the national Italian RAI TV channel, the silent pro version has been in existence since 2004 and according to his sources, some pro's have also made use of it. Now information however, for how long the battery lasts. Probably only for 20-30minutes, finishes or hard and decisive parts of the race.
In contrast to the loud retail version with the visible battery under the saddle, the pro version is silent and not visible...
check out the video (italian) to judge whether it's reality or nevertheless a hoax:
http://bit.ly/BiciDopata
In contrast to the loud retail version with the visible battery under the saddle, the pro version is silent and not visible...
check out the video (italian) to judge whether it's reality or nevertheless a hoax:
http://bit.ly/BiciDopata