Retevis Covert Air Tube Earpiece Headset 1 Pin 3.5mm Flexible Throat Mic PTT Earpiece for Cellphone (1 Pack)

* 1 pin 3.5mm throat microphone acoustic tube covert earpiece headset with PTT for cellphone * You can hidden it under the collars to provide private communication; and transmit the sound by vibration;not by the mic; great use in noise environment * You can adjust the size depends on your neck; and it fits well on neck to transmit crystal sound to your teammates * Clear surveillance style tube wraps behind the ear with earpiece fitting securely inside the ear * Provides private communication; and transmit the sound by vibration not by the mic; great use in noise environment; such as military; paintball; riding; security;police;bouncer; warehouse