1、The compact size of the wireless microphone is more flexible and convenient to use. 2、2.4GHz digital wireless transmission, universal HIFI original sound recording, anti‑interference transmission distance up to 60 meters. 3、Powered by AAA batteries, longer battery life, convenient and quick to replace batteries. 4、The fixing clip can be adjusted 360 degrees to adapt to various angles of use, and it is very convenient to fix to the belt and collar. 5、The receiver supports synchronous monitoring, always knows the recording situation, and can control the volume of the input signal. 6、Omni‑directional high‑fidelity mic with vocal curve correction ability, no matter where your voice comes from, it can accurately pick up the sound so that the sound pickup effect is as clear as HD picture quality. 7、ABS high‑strength shell is durable and not easy to wear, which effectively protects internal components. 8、Professional recording equipment is easily competent for online celebrity live broadcast, music recording, beauty bloggers, food recording, video shooting, interviews, etc. Item Type: Wireless Microphone Material: plastic Color: As Pictures Shown Weight: Approx. 530g/18.7ozModel: WM4 Pro K2 Type: 1 drag 2 Frequency band: 2.4GHz (2405-2478MHz) Frequency response :35Hz-14KHz±3dB Directing: Omnidirectional SNR: ≥84dB Distortion: ≤0.05% RF output electric frequency: 3mW The headphone output: 32 Ω, 65 mW Sensitivity: -90dB±3dB=1V/Pa, 1KHz Audio output interface: 3.5mm Transmission range: 60 meters (barrier-free) Battery: 2 x AAA battery for each device (no battery, need to buy separately) How to use: 1. Open the battery compartment and install batteries in the transmitter receivers 2. Slide the open key to start the machine, and the transmitter and receiver will be connected automatically 3. Install a 3.5mm collar microphone for the transmitter 4. Use a 3.5mm audio cable to connect the receiver to the camera or other shooting equipment 5. You can record the sound. 1 X Receiver 2 X Transmitter 2 X Microphone 1 X 3.5mm Straight Head Audio Cable 1 X 3.5mm Bend Head Audio Cable 2 X Windproof Cover 2 X Clip 1 X Base 1 X Storage Bag 1 X Manual 2 X Sticker