Sennheiser SL Headmic 1 BE. The SL Headmic 1 is a particularly unobtrusive and user-friendly neckband microphone equipped with the tried-and-tested MKE 1 microphone capsule (omnidirectional characteristic). The adjustable neckband makes the microphone easy to handle. In addition, the extremely light (7 g) but robust metal temples ensure maximum wearing comfort even during prolonged use.

Product details : https://www.sennheiser.com/de-at/catalog/products/mikrofon/sl-headmic-1/sl-headmic-1-be-506272