My interest was piqued by this device, particularly because of the price and that it looks and would feel more familiar to me as an rDNA user than an iStick.
The lack of a floating 510 pin is the major miss here, especially as one of their selling points is that you don't need a screwdriver to open the battery cover - more convenient.
Sorry, but I'm far more likely to be changing an atty than swapping out a battery so I have to carry around the screwdriver anyway! Numpties!!
I'll wager it's cheaper to fit with magnets rather than a more solid and secure screw and just maybe there's money in replacing lost covers. It does however make it look neater and cleaner, I'll give it that.
There's not much detail here on why the Vaporshark is better ... only that it is, of course, more expensive.
It is great to see these devices at a low price point, pretty soon we'll be flooded with options. Already the Eleaf iStick 50W is on the horizon ... 4400 mah, floating 510 pin, fires down to 0.2ohm and delivers more power than an rDNA40. That blows this Cloupor out of the water.