Closer to the MICROPHONE.
The Big Bang Theory Season 4, Episode 2
It's an ultrasonic MICROPHONE
so we can hear the baby's heartbeat.
The Big Bang Theory Season 9, Episode 20
They inserted a MICROPHONE in them,
a Keylock 20-10
Money Heist Season 1, Episode 13
Rio had a MICROPHONE and a GPS beacon.
Money Heist Season 3, Episode 8
a telephone, a fucking MICROPHONE.
Money Heist Season 1, Episode 11