I bought a new N900 from the US, but I noticed that it came with WH -101 headphones, and not the usual WH-701 headphones.

The phone was manufactured 2009 sometime (it says NokiaCare ends 18/03/11).

Does anyone know if the N900, USA version, ever came with the WH-101 headphones?

Should I be concerned I have not got a genuine N900? (IMEI number according to Nokia UK is genuine).