Zerfun 4-in-1 Wireless Lavalier Microphone System With a Charging Case

4-in-1 Design: The receiver often features a universal design (or multiple adapters) allowing compatibility with USB-C (Android/PC) and Lightning (iOS) devices. Charging Case: The microphones charge automatically when stored in the included case, which often features a digital battery percentage display. Intelligent Noise Reduction: These mics often feature DSP (Digital Signal Processing) chips to filter environmental noise for clearer voice recording.