Movo 2.4GHz Wireless Lavalier Microphone System (164' Range) for Nikon D7200, D7100, D7000, D5500, D5300, D5200, D3300, D3200, D810, D800, D750, D610, D500, D90, D5, D4, D4S, D3X, DF DSLR Cameras Includes Transmitter with Belt Clip, Receiver with Camera Shoe/Tripod Mount, Lavalier & 2 Earphones 2.4GHz Wireless system features internal boost antennas with a 164-foot (50-meter) range Frequency response: 35 Hz - 14 kHz Audio input/output: 3.5mm Transmitter and receiver are each powered by two AAA batteries (not included) which provide 3.5-4 hours of runtime