The Sennheiser 559s headphones came with 1 long cable, with a large jack plug fitted and No! adapter to turn it into a small jack plug. I had to buy one separately and broke it after a few days.
The Sennheiser 599s came with 2 cables one long, fitted with a large jack plug and also had an adapter to change it into a small jack plug. It also came with a shorter cable, fitted with a smaller jack plug (I now use this on the 559s depending on what I'm listening on.) I bought this cable to use on the 599s if I'm listening on my phone, and it gets a lot less kinks in the cable and just "feels" better.