Av-jefes Avl800 On-camera/Recording Directional Condenser Microphone Back Electret Condenser, Unidirectional Impedance: 600 ohm +/- 30% Operating Voltage: 1.5V AA Battery Switch: Sliding Type (On/Off) 1/8" Stereo to 1/8" Stereo Lock-Screw 1ft Cable & Dual 1/8" Mono (R+L) to 1/8" Stereo Lock-Screw 10ft Cable