This medium size, clear earholder secures the miniature ear microphone in the ear. Compact and lightweight, this unit picks up sound through bone vibrations in the ear canal and leaves the hands free and face unobscured. It’s perfect for security personnel that must retain the ability to help, hear and speak directly to those not on the communication system. EMS may be worn with protective masks without reduction in clarity of sound. It’s ideal for high noise environments.