Originally Posted by Fredo76

OP has GPS via his FitBit. Presumably it does route tracing, etc.

OP has stated a need for accurate Time Speed Distance information like he has from his wireless CatEye Strada, except when it screws up due to RF interference. A wired CatEye would give the same information, without screwing up due to RF interference.

It has been stated that wired speedometers are 'obsolete'. That is like saying that nuts and bolts are obsolete, because we have glue now. 5 1/4" floppy disks are obsolete. Wired speedometers are old-school engineering, where simplicity and reliability count.

Here's to everyone's serendipitous cycling electronics experiences! Ride what you like, and have a good day.