DeW It Right Tap Mics. 
Two omnidirectional condenser lavalier microphones 
with one connector, with full range sound, made specifically for tap dancing. 
(3.5mm 1/8 inch pin connector made for SENNHEISER) 
***** Please note a Wireless Transmitter and Reciever System is needed to operate your microphones********
Mic specifications
SPL max - 120db
Impedance - 1600Ohm
Sensivity - -63db
Response 30>20k