Exhibit 99.1 This Statement on Form 4 is filed jointly by Perception Capital Partners II LLC, Scott Honour and Marcy Haymaker. The principal business address of each of these reporting persons is 3109 W 50th St., #207, Minneapolis, MN 55410 Name of Designated Filer: Perception Capital Partners II LLC Date of Event Requiring Statement: October 16, 2023 Issuer Name and Ticker or Trading Symbol: Spectaire Holdings Inc. (Nasdaq: PCCT) PERCEPTION CAPITAL PARTNERS II LLC By: /s/ Scott Honour -------------------------------------- Name: Scott Honour Title: Authorized Signatory /s/ Scott Honour Scott Honour /s/ Marcy Haymaker Marcy Haymaker