K old like this device is already being cloned and sold in shops, I saw one today at my local B&M, it was labeled Emech on the shelve but was actually a Heatvape Invader, looked exactly like the Dovpo with a different logo and when you hit the fire button the panel on the back displayed the Heatvape name,
I tried to do a search on YouTube the and did not come up with anything.