3 in 1 Mini Wireless Lavalier Microphones for iPhone Android Camera with Noise Reduction Function 1. This lavalier wireless microphone adopts 2.4G wireless international common frequency band, with fast connection speed, high signal stability, less interference and short audio delay. 2. The transmitter and receiver can transmit up to 120 meters (393 feet) without obstacles 3. The lapel microphone is equipped with a 3-in-1 universal receiver, no need to replace multiple separate interfaces or interface cables. It is compatible with iPhones, iPads, Android phones, DSLR cameras, laptops, and many other devices. 4. The lavalier microphone adopts noise reduction technology, which helps to minimize ambient sound and improve audio quality, whether you are shooting Vlogs, recording podcasts, giving speeches or conducting interviews, it can bring you clear audio effects. 5. With dual wireless microphones, multiple peoples voices can be recorded at the same time. This is a handy feature for those who need to capture high-quality audio on multiple devices simultaneously, such as during interviews or live performances. 6. Plug and play, easy to use, open and plug in the receiver to connect automatically, the real-time monitoring function allows users to directly monitor the audio being recorded through the earphones to ensure accurate and clear recording. Mini body design, lavalier microphone, easy to carry and use.