Odd... the measurements of a Billet Box is almost exactly the same size as a DX200. Do they feel the same in your hand?
It is close in size to the DX200, a bit smaller on all sides & lighter in weight!
Also it's a complete unit, no
tank required! over & above the original foot print
The BB is a solidly built unit! It feels like it's quality made.
It has a decent capacity for it's size, an 18650 for good battery life & all fits in a shirt pocket
I have both an Authentic & a clone, from the out side there imposable to tell apart!
If you remove the covers you can see that a little more care was takin with the wiring on the Authentic

An Authentic is $260 to $300, at least now they have them instock & you can buy one with out a real hassle like before the clones! The Authentic's have no USB port!
The clones (SXK) were identical before, but now have a USB port built in

You can get one for from $90 to $119 depending were your looking. The clones come in waves & are unavailable once the current batch's are gone

Obviously they both have an Authentic DNA60 Big Screen
I really enjoy mine

It is a restricted lung hitter, with many options for inside the Boro
tank. Rebuilders & blister pack coils
You can go crazy & spend a ton of $ on it, But you don't have to

A simple rebuildable, like an Insider or Exocet performs very well! An A
tank is a great option for Blister Pack coils, many different blister pack coils fit in side the A Tank
Really Bill, I'm very Surprised you don't have one! It's the perfect mod for out & about
