Abstract: Various aspects of the present disclosure relate to a surgical microscope system, and in particular, to an arm for a surgical microscope system. The surgical microscope system comprises an optics carrier comprising optical components of a microscope of the surgical microscope system. The surgical microscope system comprises a display device for displaying image data recorded by an optical imaging sensor of the surgical microscope system. The surgical microscope system comprises an arm. The arm comprises a first section and a second section. The first section is configured to provide a vertical and/or lateral adjustment of the position of the optics carrier. The second section is attached to a suspension point of the first section and to the optics carrier.

Abstract: A device for acoustic analysis has a first hearing device with a first sound input and a first sound output and a second hearing device with a second sound input and a second sound output. The first hearing device is in acoustic communication with the second hearing device. The first hearing device can analyze the acoustic communication and output a corresponding result. Consequently, two hearing aids, for example, can test each other, and permit a user to check hearing devices and, in particular, hearing aids in a simple fashion without the hearing aid wearer having to visit an audiologist for the test.

Abstract: A hearing aid includes a housing, a battery door configured to receive a battery, and a battery door locking mechanism. The battery door locking mechanism includes a magnetic element configured to magnetically lock or unlock the battery door. In order to open the battery door, an external actuator having a magnetic device is brought close to the hearing aid and the battery door locking mechanism of the hearing aid is actuated magnetically. A method for operating the battery door locking mechanism is also provided.

Abstract: A device for acoustic analysis has a first hearing device with a first sound input and a first sound output and a second hearing device with a second sound input and a second sound output. The first hearing device is in acoustic communication with the second hearing device. The first hearing device can analyze the acoustic communication and output a corresponding result. Consequently, two hearing aids, for example, can test each other, and permit a user to check hearing devices and, in particular, hearing aids in a simple fashion without the hearing aid wearer having to visit an audiologist for the test.