I have ordered it from the producer, but I bought an electric violin meantime, so it became unnecessary for me. It is brand new, It was never used. 

Here is the info from the website of the producer:

After two years of focused experimentation, I am ready to announce my new pickup/mic system for violin. This simple, reliable and great sounding dual system fits to any violin with no extra clamps or wires.

The pickup is my deluxe bridge pickup, using only the finest quality bridge blanks. The electret mic floats over the instrument on an adjustable yet stable arm. and was chosen, from most of the capsules available, for its clarity , response, feedback suppression and ability to match well with the pickup.

The chin rest mounted stereo jack has the pickup wired to the tip and the mic to the ring. Just take the fiddle from its case , plug in and ready to go. You can still use a mono cable to just use the pickup alone.