Ulanzi A21 Magnetic Wireless Lavalier Microphone with AI Noise Reduction

Experience broadcast-quality audio with the Ulanzi A21 Magnetic Wireless Lavalier Microphone. Smart AI noise reduction strips away distractions, leaving only your voice crystal clear—ideal for content creators, podcasters, and professionals.

The magnetic clip stays put through any movement, while dual transmitters and a compact charging case keep you recording for hours.

Universal compatibility with laptops, tablets, and phones means seamless integration into your existing setup. Wireless freedom has never sounded this good.

General Information

• Brand: Ulanzi
• Model: A21
• Microphone Type: Lavalier microphone
• Polar Pattern: 360° Omnidirectional

Audio Specifications

• Signal-to-Noise Ratio (SNR): >58 dB
• Sampling Rate: 32 kHz / 24-bit

Wireless & Transmission

• Transmission: 2.4 GHz
• Wireless Operating Range: Up to 100 m (328 ft) in open space
• Compatible Devices: Laptops, tablets, phones

Battery & Power

• Battery (Transmitter): 3.7 V, 75 mAh Polymer Li-ion, up to 6 hours runtime
• Battery (Charging Case): 3.7 V, 400 mAh (1.48 Wh) Polymer Li-ion, recharges 2 transmitters twice
• Charging Time: 1.5–2 hours
• Runtime: 6 hours per microphone; 30 hours total with charging case

Physical Specifications

• Dimensions (Transmitter): 28 × 26 × 13 mm (1.10 × 1.02 × 0.51 in)
• Weight (Transmitter): 8 g (0.28 oz)
• Dimensions (Charging Case): 93 × 38 × 32 mm (3.66 × 1.50 × 1.26 in)
• Weight (Charging Case): 49 g (1.73 oz)