The Pockex : 19mm Diameter (19 x 19) x 117mm, 1500mah battery, 2ml tank.
Very little difference in size but a huge difference in battery run times/capacity, the Pockex can be slightly over filled to 2.1ml (I have done it without any real issues) so an extra 1ml of juice.
Given the vape quality of the Pockex being far superior to the Icare, this new Icare is not even in the race.
It's not going to be any more stealthy than the Pockex for practicality, it has a battery that will die 5 times faster, it requires nearly double the refills, if it's like the original Icare & Icare mini then it won't deliver the nic as good as the Pockex & most importantly, the vape quality & flavor from the Pockex is lightyears ahead.
I think this one is doomed to be a failed product.