Voice Booster Low Profile Light-Weight Single Ear-Hook Omnidirectional Microphone Headset Style Microphone but hangs on only one ear. Omnidirectional. Made for use with all VoiceBooster/Aker Voice Amplifiers, Works with other brands. Clip on wire allows the cable to be attached to a shirt collar to prevent the microphone from being pulled off the ear. Adjustable boom/tip and adjustable ear hook. 3.5mm connection with 46 inch cord. Highly Directional Control Feedback