The battery of that portable USB charger size voice recorder is powerfull enough to be left somewhere for months of recording. Of course, you can also use it to recharge your phone from a USB cable.
A magnet comes within the box to offer to the users a maximum of possibilities.
This magnet is not fixed to the recorder so you could choose to use it or not. Retrieving your proofs will be as easy as using a normal USB key; Simply connect the recorder, using its own USB cable, to your computer and it will be quickly recognized as a USB key.
No special software required; compatible with Mac IOS and Windows.