USB Travel Keyboard with UltraNav - Like a TP keyboard?

[dinotopia]

Which Thinkpad keyboard does the USB Travel Keyboard most feel like?
It is made in China, and basically looks just like a T-series Thinkpad keyboard, but since I don't own a Thinkpad, I wonder if anyone could tell me.

[DavidNZ]

Haven't fondled a T series so can't say for sure, but I can tell you that it's the best desktop keyboard I've ever used. Love it.