What brand is the small box camera worn on the chest of the guest in "Star Detective"?

The idea of "Star Detective" comes from the reasoning variety show "Crime Scene" of JTBC in South Korea. The stars who participate in each recording need to look for evidence at the "crime scene" and infer the real murderer.

However, because the program is a variety show of plot reasoning, the original story can't be copied and used in the China version. In the first season of the program, the screenwriter and director of the Korean variety team came to the scene for guidance. After the director group learned the core methodology of scriptwriting and shooting, the Korean team left, and the director group still had to rely on its own team to make up stories and design plots. Since the first season of the program, all kinds of detective stories, suspense stories and mystery movies have been the source of inspiration for the script stories.

According to the setting of Star Detective, there are six star guests in each episode of the program, who play different roles, among them, there is a detective, a murderer and four suspects, and they are all in a fixed space. They face a well-planned murder together, and they need to find out the real murderer by collecting evidence and reasoning. According to the program, only one murderer can lie in the whole process. In order to hide his identity, he will choose to frame others and clear his suspicion.