EM-5030C Ear-Bone Microphone combines a bone conduction microphone and in-ear speaker into a single earpiece that fits comfortably in your ear. The earpiece delivers your radio’s speaker output into your ear for clear and private radio reception. Features an elliptical earpiece with a soft cushion that rotates to make optimal contact in any size ear. EM-5030C Ear-Bone Mic is ideal for surveillance, SWAT, military and tactical use.