These mics capture sounds from the edge of human hearing - and beyond - CDM Create Digital Music
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Buy Zoom F1 Field Recorder & Lavalier Mic (F1-LP) - AF Marcotec
Amazon.com: TASCAM Mini Portable Digital Audio Recorder with Lavalier Microphone, 24-Bit/48 kHz BWAV File Format, Black (DR-10L) : Tascam: Musical Instruments
A Guide to Field Recording: Location, Hardware, Software & More — Pro Audio Files
Amazon.com: Zoom F1-SP On-Camera Microphone and Recorder, Audio for Video Recorder, Records to SD Card, Outputs to Camera, Battery Powered, Includes Shotgun Microphone : Electronics
Zoom F1-SP 2-Input / 2-Track Portable Field Recorder ZF1SP B&H