The QTC makes it variable. 10180 cell, 40mm x 13mm. $65 bucks though.....but got choice of tints. There is a 38DD Ti which is $165.
DD - most prob about 200 plus lumens.
Its red, its fast, and its italian.....
Anybody getting one? I've wanted a 38DD for the longest time but the cost has always stopped me. This looks to be a bit less $$$, but still pretty much out of my price range.. So purdy though!
That design is perfect for QTC use. I can't help but wonder how short the battery time is with that tiny cell in direct drive. Heat must be a major issue too but in the couple minutes it'd take to burn your hand the battery would expire anyway. LOL!
"38DD", seriously? That is their name? 
Nice light anyway, $$$
Looks nice. Can you post a picture how the QTC pill is assembled and installed?