The tuning is very simple. Volume control: not very accurate down volume. The charge light indicates if you turn the crank fast enough. The charge indicator shows if the solar panel is fairly well oriented or not. Charge by USB OK. With solar panel currently facing a window (overcast), takes the load up to 1m from the window.
Edit: Station research proves difficult. I intended to use it as a backup radio, so calibration on France Inter and France Info. Unable to catch France Inter, France and info, it depends on the place in the apartment. Will be just right to listen to something else ... disappointed