This piece of jewelery, the Billet Box, was made by Billet Box Vapor USA. The Billet Box itself is a bit longer on the market, the current version is the revision 4. What makes the Billet Box so popular among vapers, is their versatility. The Billet Box can be used with Kangertech's OCC Coils, but thanks to the many optional parts (such as RBA adapters), the Billet Box can be used and rebuilt in a variety of ways.
The Billet Box by Billet Box Vapor operates with 1x 18650 (not included). The right setting is provided by a DNA60 chip from Evolv. As befits a DNA chip, it also supports temperature control (Ni, Ti, SS) in addition to the power mode. In power mode, a power of up to 60W is adjustable. The Billet Box has no (!) MicroUSB connection, so the battery can only be charged externally.
The shape of the Billet Box was chosen so that it fits ergonomically in the hand and the fire button on the side is easy to reach. To change the battery or to fill the 5.5ml tank, you can easily remove the side panel, which is held by strong magnets on the frame. The side panel also hides the display and the two plus and minus buttons. This placement leaves the exterior simple and elegant.
The tank is very easy to fill: just push the pyrex glass down and the tank can be filled. So if you are looking for a very special all-in-one device and you have a high standard, you should definitely take a look at the Billet Box by Billet Box Vapor USA.