A21 Wireless Microphone(Black and white - Type C) Ulanzi

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The Ulanzi A21 Wireless Microphone (Black and White – Type C) is a button-sized, ultra-light wireless lavalier mic for devices with USB-C ports. Featuring 360° omnidirectional recording, AI noise reduction, and up to 100 m wireless range, it delivers crystal-clear audio for vlogs, interviews, and live streams. With 6 h runtime per transmitter and 30 h total via the charging case, it’s perfect for all-day mobile recording.

The Ulanzi A21 Wireless Microphone (Black and White – Type C) brings professional audio quality to creators in a compact, lightweight form. Each 8 g button-sized transmitter clips discreetly to clothing, straps, or lapels, making it virtually unnoticeable during recording.

With 32 kHz/24-bit sampling and 360° omnidirectional sound capture, the A21 delivers clear and natural audio, while AI-powered noise reduction minimizes unwanted background sounds. The included furry windshields reduce wind noise for outdoor shoots. One-tap audio enhancement adds 3D-like reverb, making live streams and recordings more immersive.

Operating on the 2.4 GHz frequency band, the system maintains a stable wireless connection up to 100 m in open space, giving freedom for large events or outdoor recordings. Each transmitter lasts up to 6 h per charge, and the included charging case provides two full recharges, totaling 30 h of runtime. The kit also includes clips, magnets, carrying cords, and a USB-C charging cable, offering a complete plug-and-play solution for content creators.

Key Features:

• Button-sized, ultra-lightweight wireless lavalier microphone (8 g)
• 360° omnidirectional recording for full sound capture
• AI-powered noise reduction for clear voice recordings
• One-tap audio enhancement with 3D-like reverb
• Up to 100 m wireless range in open space
• Up to 6 h per transmitter; 30 h total with charging case
• Includes furry windshields, clips, magnets, carrying cords, and USB-C charging cable
• Plug-and-play operation for USB-C devices

• 1 × Receiver
• 1 × Charging Case
• 2 × Transmitters
• 2 × Furry Windscreens
• 2 × Carrying Cords
• 2 × Clips
• 2 × Magnets
• 1 × Charging Cable
• 1 × User Guide

• Microphone Type: Wireless Lavalier
• Polar Pattern: 360° Omnidirectional
• Sampling Frequency / Bit Depth: 32 kHz / 24-bit
• Signal-to-Noise Ratio: >58 dB
• Wireless Frequency: 2.4 GHz
• Wireless Range: Up to 100 m (open area)
• Battery: TX: 3.7 V 5 A Li-ion, up to 6 h runtime; Charging Case: 3.7 V 400 mAh Li-ion, charges 2 transmitters twice
• Transmitter Dimensions: 28 × 26 × 13 mm
• Charging Case Dimensions: 93 × 38 × 32 mm
• Transmitter Weight: 8 g
• Charging Case Weight: 49 g
• Charging Time: 1.5–2 h
• Operating Time: 6 h per transmitter; 30 h total with charging case