@zadiac The USB port only for upgrading firmware, not charging. So I think it can be accepted.
The design is the same as SMOK new product X CUBE II, I agree that it is the product of SMOK.
koopor official website: http://www.koopor.com
The detail info about Koopor Mini is as follows
1). Temperature protection between 200°F and 600°F (or 100°C-315°C)
2). Dual driver system
3). High-frequency dynamic monitoring resistance
4). TC Mode & VW Mode
5). A box that can breathe
6)...