The SX21 Magnetic Wireless Lavalier Microphone is a compact, 2.4GHz digital microphone system designed for content creators. Its standout features include a magnetic attachment system (similar to the Hollyland Lark M2) and broad compatibility with both iOS and Android devices.
Core Audio Specifications
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Microphone Type: Digital Omnidirectional Condenser (360° sound capture).
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Frequency Range: 20 Hz – 20 kHz.
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Signal-to-Noise Ratio (SNR): $\ge$ 64 dB.
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Sensitivity: -42 dB ± 3 dB.
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Transmission Latency: $\le$ 30 ms (ultra-low delay for lip-sync accuracy).
Connectivity & Range
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Wireless Technology: 2.4GHz Anti-interference.
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Transmission Distance: 20–30 meters (approx. 65–100 feet) in clear line-of-sight.
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Interface Options: Typically available in USB-C (Android/iPhone 15+) or Lightning (older iPhones) variants. Many kits include adapters for dual compatibility.
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Plug & Play: No apps or Bluetooth pairing required; connects automatically upon plugging in the receiver.
Battery & Power
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Microphone Battery: 110 mAh.
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Continuous Use: 6–9 hours on a single charge.
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Charging Case: 800 mAh (can recharge the mics multiple times).
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Charging Port: USB Type-C.
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Charging Time: Approx. 1.5 hours.
Key Features
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Magnetic Design: Includes a powerful magnetic back and a clip, allowing you to “snap” the mic onto thin clothing or use the traditional clip for collars.
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ENC Noise Reduction: Environmental Noise Cancellation (ENC) filters out background hums (like fans or air conditioning) while preserving the speaker’s voice.
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Dual Channel: Often sold as a 2-mic kit, allowing two people to record simultaneously into one receiver.
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Compact Form Factor: The transmitter is roughly the size of a large button, making it very discreet on camera.
Best Use Cases
Vlogging & TikTok: The small size and magnetic mount make it almost invisible.
Interviews: The dual-mic configuration is perfect for field reporting.
Online Teaching: Clear voice pickup even if the speaker moves around the room.




















































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