Movo 2.4GHz Wireless Lavalier Microphone System (164' Range) for Pentax K-5, K-3, K-50, K-30, 645D, 645Z, K-S1, K-S2 DSLR Cameras

Includes Transmitter, Receiver, Lavalier, 2 Earphones, Clips & Mount 164-foot (50-meter) range Frequency response: 35 Hz - 14 kHz Audio input/output: 3.5mm Uses AAA batteries (not included)