Connect IQ builds

Maybe a silly quistion which could have been read somewhere. But I ask anyway. When I have a build from the Eclipse IDE and have a .iq file. Can I somehow try this out in my GARMIN Fenix3 - or do I only have the simulator to test it on - before sending it through the release "gate" at GARMIN?

Can I somehow try to debug the code in my own unit?

Thanks in advance!

/HKOCH