4-string bass ukulele (SUB U-bass) and case made by Kala. The solid body is poplar and the neck is maple. The fingerboard and bridge are rosewood. It has a built-in active Shadow pickup (battery powered) and Hipshot tuners. The strings are black polyurethane and tuned EADG - same pitch as a normal bass - the tone is amazing; a bit like a double bass. The instrument is in excellent condition and fits perfectly into a ukulele orchestra. Kala case is included.
I bought this new less than 2 years ago £337. I find that I usually play my Cort short scale instrument, and I don't need 2 small basses, so the U-bass is up for sale. I'm asking £255 but will consider near offers.
I can courier it to you (UK) at your expense. Or you can collect it in person.