Yamaha don’t have any ukuleles (at the time of writing) but they are the most popular maker of guitarleles.
The guitarlele is about the same size as a tenor ukulele but has six strings (nylon – like a ukulele or classical guitar) and is tuned ADGCEA (i.e. like a guitar capoed at the fifth fret).
A bit of Turlough O’Carolan played by Dracapalley.
Erik Andreas reviews the Yamaha guitarlele GL-1
On Amazon UK