Let the hive mind of Engadget get that for you.
"I just switched to Sprint from Verizon about three months ago for the Pre. Then I went for the Hero about a week ago. Now, I miss my hardware keyboard and am thinking about switching to the Moment. I am still able to switch back to Verizon if I want and get the Droid when it arrives. Should I just trade up to the Moment when it comes out, see if I like it, and if not switch to the Droid? Or something else entirely? Help!"
there is no such thing as BenQ-Siemens anymore, they filed for bankruptcy in September 2006. Maybe what you've got is a leftover prototype but there's a 100% guarantee that this baby will never see the light of a shop.
Cheers
/Rainer