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Microphones

Ulanzi A21 Wireless Microphone

Brand: Ulanzi

Updated

Specifications

Performance

Operating Range Up to 100m (Line-of-Sight) / 20m (Obstructed)

Other

Parameter Technical Details
Polar Pattern Omnidirectional (360° pickup)
Frequency Response 20Hz – 20,000Hz
Sampling Rate / Bit Depth 32kHz / 24-bit
Signal-to-Noise Ratio (SNR) > 70dB (some modes > 58dB)
Sensitivity -38dB ±2dB
Maximum SPL 101dB SPL
Latency < 25ms (up to 40ms in AI Noise Reduction mode)
Runtime (Single Charge) Approx. 6 hours per Transmitter
Total Runtime Up to 36 hours (with Charging Case)
Magnetic Attachment System Innovative magnetic design allows the button-style transmitters to be securely placed on clothing without the need for traditional clips.
Real-time Monitoring Selected models feature indicator lights on the receiver to monitor connection status and volume levels.
Ans Yes, it is available in different versions (USB-C for Android/iPhone 15+ and Lightning for older iPhones). Ensure you select the connector type that matches your device.

Network

Wireless Transmission 2.4GHz GFSK Digital (2Mbps)
Connectivity USB Type-C or Lightning (Device-specific)

Battery

Battery (Transmitter) 3.7V / 75mAh Li-polymer
Battery (Charging Case) 3.7V / 400mAh (provides ~2 full recharges)
Charging Time Approx. 2 hours (TX and Case)
Simultaneous Charging The receiver supports pass-through charging, allowing you to charge your smartphone while recording to prevent battery drain during long sessions.

Build

Transmitter Dimensions 28mm × 26mm × 13mm
Transmitter Weight Approx. 8g
Receiver Weight Approx. 5g
Ultra-Compact Design One of the smallest wireless mics available, featuring a transmitter roughly the size of a button for a discreet on-camera look.

Audio

AI Noise Cancellation Built-in intelligent noise reduction technology minimizes background ambient sounds while preserving natural vocal clarity.
High-Fidelity Audio Delivers professional-grade sound suitable for YouTube, TikTok, live streaming, and online interviews.
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Prices seen in Bangladesh

SellerPriceSeen on
T-TECH Shop ৳3,750 November 2, 2026
Gadget House BD Shop ৳3,690 November 1, 2026
Shei Tech Shop ৳3,750 November 1, 2026

Prices as published by each seller on the date shown. They change often; confirm with the seller before you buy.

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