@danielccm - the Harmony Smart Control which you have asked about is one of the older Harmony Hub based remotes. It will not work with SmartThings until Logitech release a firmware update to add this functionality. They have said there will be a (nominal) fee associated with obtaining the additional features via an in-app purchase when that update is released.
The remotes that Ben has linked to are the new models - these are only available in the USA at the moment. The second of the remotes is effectively the replacement model for the one you have shown. If you look closely at the two remotes you will see that the transport buttons (stop, play, pause, fast forward, etc.) have moved from near the top in your model to the lower middle in Ben’s model.
I’ve previously posted a summary of the old and new Harmony hub based remotes and their differences here:
http://community.smartthings.com/t/harmony-home-control/5070/29