The PATONA Premium AI Lavalier Microphone PTS-I21S is a multifunctional, wireless portable collar microphone. It contains two transmitters and one receiver. The PTS-I21S is equipped with a built-in microphone for 360° recording. By applying the latest voice algorithm technology, it has voice processing functions such as AI noise reduction and gain control - Multifunctional wireless lavalier microphone: Ideal for versatile applications: Meetings, interviews, live broadcasts, recordings, vlogs, etc. - Includes two transmitters and one receiver: perfect for interviews, presentations and content creation - Crystal clear sound quality: professional voice algorithm processing technology. One-click noise reduction - Omnidirectional recording: captures sound from all directions for consistent voice recording - Secure and stable 2.4G wireless technology: reliable signal transmission without interference - Safe storage: thanks to the transport case, the microphone set is always protected - Long battery life: up to 18 hours of continuous recording time - Compact & lightweight: easy to carry and attach to clothing without attracting attention - Lightweight: 23 grams light