The Stasi is equipped with such listening devices mainly to maintain national security and social stability.
For her, the device is more of an ornament or a means to cover up the lazy behaviors that are not allowed.

It was purchased from an unnamed store on the verge of closing down, and the exact price she paid can no longer be determined. All she remembers is paying a month's salary for it as well as a funny joke which was rarely heard in East Berlin.

This is a code name she has given herself to distinguish herself from the countless other unfeeling names like SCH KA/123456 ...
However, few are willing to call her by this new code name. For most of her colleagues, spending time and effort on this was pointless as it would only attract unwarranted suspicion.

A notebook and a telephone—indispensable to an investigative journalist. The pages are filled with every detail heard and observed by the interviewer, no matter how trifling. She was never satisfied with recording only superficial information. Plumbing the darkest depths in search of the truth was a temptation she could never resist.

A classic messenger bag. Lightweight yet durable, it accompanies the respondent wherever they go. The young investigative journalist was tireless. She was seemingly in every corner of the city, just like the shadow.

A pair of simple glasses.
People seem to trust someone more with an "experienced" look. The respondent bought herself these glasses in her third month of work. She keeps the lenses spotlessly clean. Regardless of whether she wears them or not, her acuity and dedication as a journalist never waver.