The Sony C100 is a two-way condenser microphone, a design popularized by Sanken, that uses two capsules tuned to capture specific frequency ranges. The result is a microphone with with the ability to capture high frequencies up to 50kHz. This amount of detail makes this microphone useful on delicate sources, or for creative sound design that required pitching down the audio while retaining high frequency information is required. While the presenter doesn’t use this specific microphone, HERE is a video that demonstrates the benefits of using a microphone a broad frequency range in that scenario.