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Dual Wireless Microphones
The SX21 commonly includes two wireless transmitters. This allows two people to record at the same time.
It is especially useful for interviews, conversations, podcasts, presentations and two-person video production. Both microphones transmit audio wirelessly to the connected receiver.
Clear Voice Recording
The SX21 uses a condenser microphone design for voice recording. Its omnidirectional pickup captures sound around the microphone, making it suitable for speech and general content creation.
The microphone is designed to provide clear voice capture while reducing unwanted background sounds. Reported specifications include a frequency response of approximately 20Hz–20kHz and sensitivity around -42dB, although specifications can vary between SX21 variants.
Intelligent Noise Reduction
The microphone features noise reduction technology to help reduce environmental noise during recording.
This can be useful when recording in busy environments such as offices, classrooms, streets, events and outdoor locations. Some SX21 versions describe the technology as AI ENC or environmental noise cancellation.
2.4GHz Wireless Transmission
The SX21 uses 2.4GHz wireless transmission for communication between the microphones and receiver.
Unlike a traditional Bluetooth microphone, the common SX21 system uses a dedicated receiver. This allows you to plug the receiver into a compatible device and start recording without going through a Bluetooth pairing menu.
Plug-and-Play Operation
The SX21 is designed for simple operation. Connect the receiver to a compatible recording device and switch on the microphones.
The system is intended to establish the wireless connection automatically. This makes it convenient for users who want to start recording without installing additional software or complicated drivers.
Magnetic Clip Design
Each microphone features a compact clip-on design. Magnetic mounting makes it easy to attach the microphone securely to clothing.
The small design keeps the microphone close to the speaker’s voice while allowing the user to move freely during recording.
Rechargeable Battery and Charging Case
The SX21 uses rechargeable batteries. The microphones can be stored and charged using the supplied charging case on versions that include the case.
A commonly documented SX21 variant uses an 80mAh microphone battery and an 800mAh charging-case battery. Battery specifications can differ between production variants, so the supplied version should be confirmed before purchase.
Technical Specifications
| Specification | Details |
|---|---|
| Product Name | SX21 Wireless Microphone |
| Type | Wireless Lavalier Microphone |
| Transmission | 2.4GHz Digital Wireless |
| Microphones | 2 Wireless Transmitters |
| Receiver | USB Type-C on common Android version |
| Microphone Type | Condenser |
| Pickup | Omnidirectional |
| Noise Reduction | AI ENC / Noise Reduction, depending on variant |
| Frequency Response | Approximately 20Hz–20kHz |
| Sensitivity | Approximately -42dB |
| Transmission Range | Approximately 20–30m, depending on conditions and variant |
| Battery | Rechargeable |
| Charging Case | Included on common dual-mic versions |
| Mounting | Magnetic Clip |
| Operation | Plug and Play |
| Main Material | ABS |
| Suitable For | Vlogging, interviews, streaming, teaching and recording |
Specifications may vary between SX21 versions, particularly the receiver interface, battery capacity, transmission range and included accessories.
Ideal For
The SX21 Wireless Microphone is suitable for:
YouTube videos
TikTok and Instagram Reels
Vlogging
Interviews
Podcasts
Facebook Live
Live streaming
Online teaching
Presentations
Video conferencing
Mobile filmmaking
Social media content creation
Why Choose the SX21 Wireless Microphone?
The SX21 offers a practical solution for users who need better voice recording without complicated equipment. Its dual microphone setup makes it useful for two-person recordings, while the wireless design allows speakers to move freely.
Noise reduction helps improve voice clarity, while the magnetic clips make the microphones quick to attach. The rechargeable design and portable charging case also make the system convenient for regular content creation.
FAQs
No. The commonly supplied SX21 uses 2.4GHz digital wireless transmission with a dedicated receiver. It does not require conventional Bluetooth pairing.
The common SX21 dual version includes two wireless microphone transmitters and one receiver. Some variants may be sold with a single transmitter.
Yes. SX21 versions commonly include AI ENC or intelligent environmental noise reduction to help reduce background noise and improve voice clarity.
Yes. The dual-microphone configuration makes it suitable for interviews, podcasts, presentations and two-person video recordings.
Many dual SX21 packages include a portable charging case for storing and recharging the microphones and receiver. The exact package contents depend on the variant supplied.
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