Introduction
The QINOJA K30 Wireless Lavalier Microphone is a versatile 4-in-1 audio recording solution designed for a wide range of devices, including iPhones, Android phones, cameras, and computers. This portable microphone system offers crystal-clear sound with integrated noise cancellation, automatic connection, and extended operating time, making it ideal for video recording, audio recording, vlogging, and online communication.
What's in the Box
Your QINOJA K30 Wireless Lavalier Microphone package includes the following components:
- 2 x Microphone Transmitters (with foam windscreens)
- 1 x 4-in-1 Universal Receiver (USB-C, 3.5mm TRS, USB plug cables)
- 2 x Type-C Charging Cables
- 1 x USB Adapter
- 2 x Additional Fuzzy Windscreens
- 1 x User Manual
- 1 x Storage Box

Image: All components included in the QINOJA K30 Wireless Lavalier Microphone kit, neatly arranged.
Video: An unboxing and overview of the QINOJA K30 Wireless Lavalier Microphone kit, showcasing its components and compact carrying case.
Setup
- Connect the Receiver: Plug the 4-in-1 universal receiver into your recording device. The receiver supports USB-C, 3.5mm TRS, and standard USB connections. For iPhones, use the appropriate lightning connector. For Android phones with a USB-C interface, you may need to enable the OTG (On-The-Go) switch in your device settings for proper connection.
- Power On Microphones: Press and hold the power button on each microphone transmitter until the green indicator light illuminates.
- Automatic Pairing: The microphones and receiver will automatically pair. The indicator lights on both the microphone(s) and receiver will blink green and red during pairing, then remain solid green once connected.

Image: Visual guide illustrating the simple three-step setup process for the wireless microphone system.
Operating
Noise Cancellation
The microphone features an integrated active noise cancellation chip. This mode is enabled by default and helps detect and reduce ambient noise, focusing on your voice for clearer recordings. For situations where you prefer to capture all ambient sounds without filtering, the acoustic mode (no noise filtering) can be selected.

Image: Examples of noise reduction, acoustic, and silent modes for varied recording environments.
Dual Microphone Use
The universal receiver can connect to two microphones simultaneously, allowing for interviews or recordings involving two speakers. Both microphones will transmit audio to the single receiver.
Long-Range Transmission
With advanced 2.4 GHz transmission technology and an optimized antenna, the system offers a signal range of up to 20 meters (approximately 65 feet). This allows for freedom of movement during recording without compromising audio synchronization.

Image: Demonstrating the microphone's effective range for recording at a distance.
Video: A demonstration of the wireless lavalier microphone's audio quality and ease of use with an iPhone, highlighting its clear sound capture.
Multi-Scene Application
The QINOJA K30 is suitable for various recording scenarios:
- Online Teaching: Provides clear audio for virtual classes and presentations.
- Video Recording: Enhances audio quality for vlogs, tutorials, and creative content.
- Conferences: Ensures participants are heard clearly in virtual or in-person meetings.
- Press Interviews: Captures professional-grade audio for journalistic purposes.
- Live Streaming: Improves sound for live broadcasts on various platforms.

Image: Diverse applications of the wireless microphone, from educational to professional settings.
Maintenance
Charging
Both the microphone transmitters and the receiver have built-in rechargeable batteries. Use the provided Type-C charging cables to charge them. A full charge takes approximately 2 hours and provides up to 6 hours of continuous use.
Windscreens
The foam and fuzzy windscreens help reduce wind noise and plosives. Regularly clean them by gently wiping with a dry cloth. Replace them if they become damaged or lose effectiveness to maintain optimal audio quality.
Troubleshooting
- Microphone not connecting: Ensure both the microphone(s) and receiver are powered on and fully charged. Check that the receiver is securely plugged into your device. For Android USB-C connections, verify that OTG is enabled in your device settings.
- Poor audio quality: Ensure the microphone is positioned correctly (clipped close to the sound source). Use the fuzzy windscreen in windy or noisy outdoor environments. Check for obstructions between the microphone and receiver that might interfere with the signal.
- No sound output: Verify that your device's audio input settings are configured to use the external microphone. Check the volume levels on your recording device.
Specifications
| Model Name | K30 |
| Brand | QINOJA |
| Microphone Form Factor | Lavalier |
| Connectivity Technology | Auxiliary, USB |
| Connector Type | USB Type-C |
| Special Feature | Noise Reduction |
| Compatible Devices | Smartphone, Personal Computer |
| Operating Time | Up to 6 hours (after 2 hours charging) |
| Transmission Range | 20 meters (65 feet) |
| Material | Plastic |
Warranty & Support
QINOJA products are designed for reliability and performance. For warranty information or technical support, please refer to the contact details provided in your product packaging or visit the official QINOJA website.





