Xvostick Red / SS

From MiniEcig:

XvoStick is one of the smallest regulated mods with 18650 battery. It's so small that you can fully hide it in your hand and use it as a pocket mod.
XvoStick has a satined aluminum body with black or blue anodized finish. This finish boasts a hardness of 60 according to the Rockwell scale.
It's fully liquid proof, so a leaking atty cannot damage it.
The button is made from brass.
There is a logo, but no serial number.

The MiniDrip, also by Chels, is a perfect complimenting atomizer. Alternatives include any 510 atomizer 23 mm in diameter or less.

Features:
Small, compact, pocket friendly
DNA40: latest version with temperature control, Fahrenheit and Celsius; small screen
18650 battery (not included)
USB charger
Screen on the bottom
Easy access to the chip  
 

Dimensions:
Height: 80 mm (3.14 in)
Atty hole: diameter - 23.5mm (0.92 in), depth - max. 35 mm (1.37 in)
Bottom size: 24-27 mm x 49 mm (0.94-1.06 in x 1.9 in)
Weight: 150 gr (5.3 oz) 

Other parameters:
Atomizer connector: 510 made of SS 303 with brass pin