Like SoonerBent, I've used the Vetta V100 wireless with wireless cadence on my Volae. It can take a little fiddling o get the cadence transmitter attached depending on your crank, but it can be done.
Currently, i'm using the V100 on my Baron and have a basic Cateye Mity 8 (wired, without cadence) on my Volae. I'm a naturally high spinner and don't worry about cadence.
Dennis
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Keep the chain tight!