Ulanzi A21 Lightning Wireless Microphone System (Black) (A054)

Ulanzi A21 Wireless Lavalier Microphone (Lightning)

Ulanzi A21 is an ultra-compact dual-channel wireless system that provides professional-level 32kHz/24 Bit audio recording. The system operates at a frequency of 2.4 GHz, ensuring stable signal transmission with a distance of up to 100 meters. The microphones are equipped with intelligent AI noise reduction and support several operating modes, including a surround reverb effect.
 

Advantages

1. Professional-grade sound

With a sampling rate of 32kHz / 24 Bit, the microphone captures every detail - from barely perceptible whispers to rich background sounds.

 

2. AI intelligent noise cancellation

The built-in AI filtering system effectively cuts out unwanted background noise, while maintaining the naturalness and clarity of your voice even in noisy locations.

 

3. Incredibly light and compact

Each transmitter weighs just 8 grams and is about the size of a button. You will hardly feel it when you wear it all day.

 

4. Transmission range up to 100 meters

Using the 2.4GHz band provides a stable, interference-free connection over long distances, ideal for outdoor filming or large-scale events.

 

5. Up to 36 hours of battery life

A single charge of the microphone is enough for 6 hours of continuous recording, and the compact charging case increases the total usage time to 36 hours.

 

6. One-touch control

With one button, you can instantly switch between modes: noise cancellation, original sound, 3D reverb (echo) or complete sound mute (Mute).

 

7. Three ways to wear

The well-thought-out design allows you to attach the microphone in a way that is convenient for you: using a classic clip, a powerful magnet for clothing, or a stylish neck strap.

 

Technical specifications

• Brand: Ulanzi
• Model: A21
• Operating frequency: 2.4 GHz
• Wireless operating range: up to 100 m (in open space)
• Directionality: omnidirectional 360°
• Sampling frequency: 32 kHz / 24 bits
• Signal-to-noise ratio: >58 dB
• Battery:
  • Transmitter: 3.7 V, 75 mAh (lithium polymer) — up to 6 hours of operation
  • Charging case: 3.7 V, 400 mAh, 1.48 Wh (lithium polymer) — charges 2 transmitters twice
• Dimensions and weight:
  • Transmitter: 28 × 26 × 13 mm, 8 g
  • Charging case: 93 × 38 × 32 mm, 49 g

 

What is included in the kit?

• Receiver
• Charging Case
• Transmitter - 2 pcs.
• Furry Windshield - 2 pcs.
• Neck strap (Lanyard) - 2 pcs.
• Clip/clip (Clip) - 2 pcs.
• Magnetic mount (Magnet) - 2 pcs.
• Charging Cable
• User Manual

 

Scope of application

The microphone is designed to meet a wide variety of recording needs:
 

• Professional births and reviews for social media.
• Live broadcasts and live streams.
• On-the-go interviews and reportage filming.
• Recording online courses and training videos.

 

Why should you buy the Ulanzi A21 Lightning wireless microphone system?

The Ulanzi A21 is the perfect balance between weight and quality. Weighing just 8 grams, it is one of the lightest solutions on the market, and its Type-C support ensures compatibility with most modern smartphones (including iPhone 15/16/17), action cameras, and computers. It is a reliable tool that will provide crystal clear sound without unnecessary wires and complicated setup.