Neewer 2.4GHz Wireless Clip-on Lavalier Stereo DSLR Microphone System with 3.5mm Microphone Input Socket and Standard Hotshoe Mount The NEEWER 2.4GHz Wireless DSLR Microphone System offers the most discreet and convenient wireless camera solution available Dual Channel Signal Receiving 2.4GHz Wireless working Automatic Channel Scan; Built-in Microphone Compatible with Nikon D5100,D7000,D300s,D3s,Canon EOS 1D Mark IV, 5D Mark II, 7D, 60D, 600D/Rebel T3i/Kiss X5, 550D/Rebel T2i/Kiss X4,Pentax K7 K-5 ,Panasonic HDC-MDH1GK and All Camcorder and Digital DSLR Camera