Supports two-way monitoring in the ear, and the transmitter comes with a Type-C headphone jack, which can be adjusted in real time while recording and listening. Between the receiver and the transmitter, you can monitor each other, plug and play, no need to set up. microphone , omnidirectional pickup, strong anti-interference ability, can effectively identify the original sound to meet the recording needs of noisy environments. Fast automatic pairing, seamless connection. Built-in optimized antenna design, carrying 570-618Mhz, the connection distance of radio and television frequency band, the signal is stable. High-end high-end noise reduction chip, intelligently identify different noise environments. Accurately restore human voice to achieve high fidelity effect. 2.4G wireless technology, ready to use, automatic frequency pairing, easy to operate. Widely compatible, 3.5mm trs simulates USB-C and IOS digital audio output, compatible with various cameras, mobile phones, tablets and computers and other devices. Specification: Name: Wireless Lavalier Microphone Chip: 2.4G Battery capacity: 250mah+250mah About: 2 hours when charging Use time about: 20 hours Signal-to-noise ratio: -64dBm Transmission delay: 20MS Receiving distance: 30M (under barrier-free environment) Frequency Response: 20Hz- 20kHz Sensitivity: -42dB Size: 3.2x1..85cm style:1 RX and 2TX Colour:black Material:ABS Package Contents: 1 * Receiver 1 * Transmitter 1 * cable for Type-C 1 * cable for Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.