a piezo element , 1/4 female audio jack, guitar string and a piece of metal. as you can see a string is missing, this is because i have not yet found the "right" sounding string to accompany the first one. its also electric but instead of a 1/8 i wanted something more... suitable for my budget since i dont have an amp. and i have a radio with an aux input.
hope you like it! :D