Before setting out tonight, I equipped my utility belt with a tiny microphone and transmitter.
6 seconds sound clip from Batman (1966) - He Meets His Match, the Grisly Ghoul (S1E16) TV Series.
You can hear this line at 00:05:08 in the Blu-ray version of the movie.
Quote context
[...]
- Quick, cut us out of here before the power comes on.
- Or that's what we will be, just holy smokes!
- You overlooked this, Chief O'Hara.
- Right. The tape from our anti-crime recorder.
- Before setting out tonight, I equipped my utility belt with a tiny microphone and transmitter.
- Every word those criminals said was recorded in the Batmobile.
- But what good will that do, Boy wonder?
- I thought you said they spoke to you through a trick voice distorter.
- Tricky, commissioner. Tricky, but vain.
[...]