The 900 didn't came with a headset? I though headsets where mandatory.
The 900 on AT&T did not. The 800 did, but it was a single button ear bud that I didn't even unwrap. If I remember correctly (so many phones in the last 2 years...) neither the Focus S or the Titan had an included headset. I know the original Focus had one included; a damn nice one too: in-ear with a triple button controller.
My lumia 900 through Rogers Canada came with headsets.