I hav bought mw600 for Rs.3800 coz I heard abt it a lot, d best part was pairing 3 devices,
I hav 2 nokia mobile n73 & XM 5800,
1) 1st it dose not support all d feature for nokia.
2) It works with xm 5800 & ne other XM phone of nokia (wht I found out by RND)
3) It works with n73 only if u reset it (for reset c below note)
4) With nokia only pairing of 2-3 devices, player keys & call feature works
5) Caller info & songs info doesn’t works

Now I would like to tell u abt my way of using it, till I buy a new XM coz I like nokia phone but not ther Bluetooth headset (thts another story)

So wht I have done is tht.

1. I have reset mw600 (for reset c below note)
2. Thn I 1st paired xm 5800 but did not connected it.
3. thn I paired n73 whch get connected or connect it
4. thn without switching OFF ne thng connect xm5800
It works only till mw600 get switched off or for a day, thn again for next time same from 1 to 4

Note: how to reset.
1 make sure d headset (mw600) is OFF.
2 press & hold power key until pairing indication appears.
3 thn again press power & call key simultaneously until d headset turns off.
So tht for next time u turn ON d device, it will directly start pairing indication.

For other devices jus pair 1 after d other but ya by 1 phone u ll only make or receive & by other u can only play music

Rgds,
K K