The deattachable throat microphone with acoustic tube (FBI style) headset as seen in the actual photos. The single sensor mic. picks up the user's voice directly from the vocal chords. This drastically cuts down on ambient noise. The clear acoustic tube headset fits snugly in the ear and keeps incoming transmissions clear and private. Excellent for use in loud environments. Features thumb push to talk button that is easily accessible while wearing heavy gloves and can be clipped almost anywhere. 

Purchase link: http://www.aliexpress.com/store/product/5X-Free-Hong-Kong-Post-Shipping-Finger-Thumb-PTT-Throat-Mic-earbud-for-Motorola-SV10-SV11/513430_1900442865.html