The Sevenoak SKM-W4-K2 is a wireless lavalier microphone system with an OLED display and 2.4GHz dual lapel wireless microphones. It features three pickup modes, real-time monitoring, and 6 gain levels for clear sound quality. With a range of 328ft and long battery life, it is suitable for live recording, vlogging, interviews, and more. The microphone can be switched between mono and stereo modes for flexibility in recording, making it a versatile tool for content creators.