https://www.musicstore.de/pt_PT/EUR/Percussion-Plus-PP2035-Tubafone-pentat-nica/art-DRU0027870-000 :
The Percussion Plus PP2035 is a handheld Pentatonic Tubaphone. It has 5 notes on a simple frame with a handle and beater.

https://en.wikipedia.org/wiki/Tubaphone

http://books.google.co.uk/books?id=xqbNlVUsTU4C&pg=PA74&dq=tubaphone&hl=en&sa=X&ei=4z_8TtvDLsjW8gP2x7CgAQ&ved=0CDAQ6AEwAA#v=onepage&q=tubaphone&f=false