Small And Convenient Design: The appearance is mini and compact, which enhances private protection, and is easy to use, plug and play, and automatically connect when the receiver is plugged in. Built in Rechargeable Battery, Long Battery Life: The transmission microphone has a built in rechargeable battery, which supports up to 10 hours of working time. Omnidirectional Microphone: This wireless mini lavalier microphone supports about 20m/65ft barrier free connection, 360° all round radio, and records every detail. Noise Reduction Technology: With professional noise reduction chip and windshield, enjoy intelligent noise reduction technology, effectively identify the original sound, clear recording in noisy environments. Widely Applicable: Strong compatibility, supporting Type C interface devices of mobile phones and cameras. It can be used for outdoor live broadcasting, interview recording, audio recording, etc.