One of the most common questions I get is whether or not someone needs an ETM series microphone or an EIM series microphone. So here is a video describing the difference that should help you choose the right microphone for your DSLR camera or iPhone.
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EIM-001 - Omnidirectional Microphone Boosts Input Volume for iPhones, iPads, Smartphones, and Tablets
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ETM-001 - Omnidirectional 3 Pole External Microphone for GoPro Hero4 or DSLR or Digital Voice Recorder
ETM-008 - Unidirectional 3-Pole Microphone for GoPro®, DSLRs or Digital Voice Recorders
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