sbiddle:

 

It's really just like router vendors like Linksys, Netgear and so on who claim things like "5 Gbps WiFi" which is a case of adding up the maximum PHY layer throughput of the different technologies they incorporate. It's not actually possible to get speeds like this.

 

 

And like mpg claims from car manufacturers. :-)
It may not even be a true  44.4 Wh batt , possibly less. The actual batt rated capacity may also be a lie.

 

It must take forever to charge the thing up via a 2A,5v USB