1. M781 is a disposable CBD oil atomizer 3. This atomzier is small but excellent. 4. Battery tube is 303 stainless, clearomizer tube is PCTG material and mouthpice part is PC material. 5. Atomizer bottom is oxygen-free copper with better electrical conductivity. *Magnet connection for battery bottom and USB port, charging easily! *Specially designed for CBD oil with real cig size!