ULANZI A21 Drawer Wireless Microphone: Tiny Size, Big Sound with AI Noise Cancellation & 36-Hour Battery

Professional audio in a button-sized package. The ULANZI A21 Wireless Microphone redefines portable audio capture with its ultra-compact design, weighing just 8g and fitting discreetly on any collar. Yet despite its tiny size, it delivers exceptional sound quality with 32kHz/24-bit sampling, AI-powered noise cancellation, and 360° omnidirectional pickup. Perfect for iPhone 15/16/17 users, Android smartphones, and content creators, this complete system features two transmitters, a convenient drawer-style charging case, and a receiver with pass-through charging. With up to 36 hours of total battery life, 100-meter wireless range, and versatile wearing options, the A21 ensures you’re always ready to capture crystal-clear audio. Top Tech Zone guarantees 100% authentic products backed by an official warranty.

Tiny Size, Big on Sound

Button-sized transmitters that deliver pro-grade audio.

• Ultra-Lightweight Design: Each transmitter weighs just 8g—so light you’ll barely notice it, allowing for total comfort during long recording sessions.

• Button-Sized Form Factor: Discreet and unobtrusive, perfect for on-camera appearances where you want the microphone to disappear.

• Multiple Wearing Options: Includes magnetic clip, collar clip, and necklace strap for versatile placement on any outfit.

Pro-Grade Sound Quality with AI Noise Cancellation

Capture every detail with exceptional clarity.

• 32kHz/24-Bit High Sampling: Captures subtle vocals and rich ambient sound with remarkable detail and accuracy.

• 20Hz–20kHz Frequency Response: Full-spectrum audio reproduction for natural, lifelike sound.

• AI Noise Cancellation: Advanced algorithms reduce unwanted background noise while keeping your voice natural and clear—ideal for noisy environments, outdoor recordings, and crowded events.

• Furry Windscreen Included: Blocks wind noise for cleaner outdoor recordings.

• 360° Omnidirectional Pickup: Highly sensitive capture delivers crisp, lifelike sound from all directions, putting you right in the moment.

Full-Depth Audio with One-Tap Effects

Enhance your sound instantly with creative audio modes.

• Single Tap Control: Press the button to switch between four modes:

  • Noise Reduction Mode: Clean, professional audio for clear communication

  • Original Mode: Unprocessed natural sound

  • Reverb Mode: Adds rich, 3D-like depth to make live streams more immersive

  • Mute Mode: Instant privacy when needed

Wireless Transmission Up to 100 Meters

Freedom to move without compromising audio quality.

• 2.4GHz Digital Wireless Transmission: Delivers stable, interference-free audio with low latency.

• 100-Meter Range (Open Space): Perfect for large events, outdoor recordings, interviews, and dynamic content creation.

• Reliable Connection: Consistent audio sync even with movement and obstacles.

36-Hour Total Battery Life with Smart Charging Case

Power that keeps up with your longest shoots.

• 6 Hours per Microphone: Each transmitter provides ample runtime for extended recording sessions.

• Charging Case Provides Two Full Recharges: Total runtime of approximately 36 hours—enough for all-day shoots and multi-day projects.

• Drawer-Style Design: Convenient press-to-pop charging case makes it easy to store, charge, and access your microphones.

More Reasons to Choose A21

Innovative features designed for content creators.

• Instant Playback: Video playback without unplugging or plugging the receiver—monitor your recordings instantly.

• Dual Mic Recording: Record two people simultaneously with the included pair of transmitters.

• Record While Charging: Receiver features an extended charging port, supporting simultaneous recording and phone charging—perfect for long livestreams and extended shoots.

• Easy-to-Use Design: Simple drawer design with press-to-pop access—no fumbling, no stress.

What’s in the Box

• Receiver ×1

• Charging Case ×1 (drawer-style with built-in battery)

• Transmitter ×2 (button-sized with 8g each)

• Furry Windscreen ×2

• Lanyard ×2

• Clip ×2

• Magnet ×2

• Charging Cable ×1

• User Manual ×1

Complete Product Specifications

• Brand: ULANZI

• Model: A21 Wireless Microphone (XCP-A053-US2)

• Transmitter Weight: 8g (ultra-lightweight)

• Sampling Rate: 32kHz / 24-bit

• Frequency Response: 20Hz – 20kHz

• Noise Cancellation: AI-Powered Intelligent Noise Reduction

• Pickup Pattern: 360° Omnidirectional

• Wireless Technology: 2.4GHz Digital Transmission

• Wireless Range: Up to 100 meters (open space)

• Transmitter Battery Life: Up to 6 hours each

• Total Battery Life: Approximately 36 hours (with charging case)

• Audio Effects: Noise Reduction, Original, Reverb, Mute (one-tap switching)

• Connector Type: USB Type-C

• Compatibility: iPhone 15/16/17, Android Smartphones (Type-C), and other USB-C devices

• Special Features: Instant Playback, Dual Mic Recording, Record While Charging, Drawer Charging Case, Multiple Wearing Options (Clip, Magnet, Lanyard)

• Included Components: Receiver, Charging Case, 2 Transmitters, 2 Furry Windscreens, 2 Lanyards, 2 Clips, 2 Magnets, Charging Cable, User Manual

Your Guarantee of Authenticity

When you choose Top Tech Zone, you choose confidence. This microphone system is:

• 100% Authentic: Guaranteed genuine ULANZI product with full manufacturer specifications.

• Backed by an Official Warranty: We ensure complete support for your purchase.

• Engineered for Creators: From AI noise cancellation to 100-meter range, every feature is designed for professional content creation.