If you're looking for a compact, easy-to-use lapel mic that plugs right into a phone's TRRS jack, the Rode SmartLav+ is the microphone for you. This
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Rode SmartLav+ Lavalier Lapel Mic Microphone for Apple iPhone iPad Smartphone 989898821471
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Rode SmartLav+ Lavalier Condenser Microphone for Smartphones with TRRS Connections - CameraLK
Rode smartLav + (Smartphone Lavalier Microphone)
Rode Smartlav+ Professional Grade Lapel Microphone For Smartphones : Target
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