Voice-Changing Bowtie

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Voice-Changing Bowtie

Voice-Changing Bowtie Profile.jpg

Japanese name: 蝶ネクタイ型変声機[1]
Romaji name: Chō Nekutai-gata Henseiki
Created by: Professor Agasa
Used by: Conan Edogawa
Shinichi Kudo
First appearance: Manga: Volume 1 - File 6
Anime: Episode 3
Appearances: Chapters: 83
Episodes: 444
Movies: 21
OVAs: 4
Specials: 1
Openings: 23
Closings: 7
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List of gadgets

The Voice-Changing Bowtie (蝶ネクタイ型変声機 Chō Nekutai-gata Henseiki?) is the first gadget created by Professor Agasa for Conan.


By turning the dial on the back Conan is able to imitate all kinds of voices that he hears. When Conan isn't wearing the bowtie, he'll usually store it away in a pocket until he needs it. This gadget is usually used together with the Stun-Gun Wristwatch, prior to receiving it, Conan was shown to knock Kogoro unconscious by kicking an ashtray.

Voice changing bow tie has a megaphone mode as shown in File 998.

There is a white version of the bow tie as shown only in episode 505-506, and 520.

Technical details

Bowtie Specifications

The theory behind the Voice-Changing Bowtie is that it works on a frequency modifier system based on patterns from the voice it is to emulate. Voice changers are real technology.

In the real world the Voice-Changing Bowtie has many flaws, such as the frequency response for the size of the speakers in the bowtie wouldn't be able to reproduce frequency of a voice realistically. The frequency modifier, in most cases, wouldn't be able reproduce the subtle but also distinguishable variations of another persons voice. In order to even change the sound in the first place they will need components such as a mic, speaker, processor and powerful batteries to keep it all running. Last but not least the Voice-Changing Bowtie needs to have Conan voice inverted to cancel out his voice completely, otherwise it would be present and noticeable. As this is a fictional drama with many factual references take it with a grain of salt that this is subject to a persons imagination, but these types of technology can and will be possible in the near future if they utilise extremely thin and small magnetic speakers which can accurately reproduce the frequencies accordingly, and the other components reduce drastically in size.


Under Construction

In most cases, Conan will use the bowtie to simulate Kogoro's voice; and less frequently Sonoko's to solve a case. However, in some unique situations, Conan used the bowtie to take other people's voices. The voice-changing function on the bowtie works by turning the dial behind the left bow to a different preset number. In the anime Episode 23, Conan mentioned in his inner speech that Kogoro Mouri's voice is stored in preset number 59.

Kogoro Mouri

Below is the list of episodes in which Conan mimicked Kogoro's voice. "???" means that the information needs to be verified.

Conan using bowtie

Sonoko Suzuki

Below is a list of times in which Conan mimicked Sonoko's voice (usually knocking her out with his stun-gun wristwatch beforehand) to solve the case.

Special Cases



See also

Professor Agasa's Voice-Changing BowtiePower-Enhancing Kick ShoesGlasses Modification (Microphone)Stun-Gun WristwatchPortable Bento Box FaxDetective Boys BadgeTurbo Engine SkateboardTransmitterCriminal Tracking GlassesElasticity SuspendersButton SpeakerEarring CellphoneElectronic Notebook MapWristwatch FlashlightVoice-changing Pen/Kamen Yaiba Voice ChangerGlasses Modification (Bullet Proof Lenses)Voice-Changing Face MaskGlasses Modification (Telescopic Lenses)Anywhere Ball Dispensing BeltHang Glider/ParagliderCuff Link SpeakersMini Air TankTurbo Engine SnowboardSatellite-Telephone WristwatchVoice-Changing ChokerDrone
Kaitou Kid's Card GunHang Glider CapeTurbo Engine ScooterTurbo Engine Skates
Others Hiroshi Agasa's gadgetsMinor Kaitou Kid gadgetsBlack Organization's gadgetsSamizu Kichiemon's gadgetsMinor gadgets