Make a hörbert yourself? For makers and tinkerers!
The kit contains the following parts:
11x ABS plastic key caps (plasticizer-free),
3x cable, free of halogen and phthalate with couplings crimped on one side
1x loudspeaker with moisture-impregnated membrane
1x potentiometer with metal axle, incl. nut
1x rocker switch incl. nut
1x potentiometer knob, solid, knurled, chrome-plated
As memory card you can use a FAT32-formatted SD / SDHC card with up to 32GB size.