This incredible speaker does not have a moving cone like most speakers you've seen, instead, a small metal rod is wrapped with the voice coil. When current is pulsed through the coil, the magnetic field causes a piece of metal to expand and contract - if pressed against a flat surface or cavity it turns it into a speaker!
- Amplifier board - we suggest the MAX98306 or TS2012
- Bone Conductor Transducer
- 150mAh Lithium Ion Polymer Battery
- Stereo Headphone Jack
- Slide Switch
- JST Battery Ext. Cable