Abstract: Hearing protection device (10, 10?, 10?) with an indication unit (40a, 40b) and a detection unit (30, 30?, 30?) to send a first detection signal, to assign a distance value based on a second detection signal of an external device (50, 50) representing the physical distance to the external device (50, 50) and to control the indication unit (40a, 40b) to provide an indication to the user (100) if the assigned distance value is at or below a predetermined threshold distance value. Thus, a collision may easily and reliably be prevented by providing an indication to the user (100), so that the risk of missing relevant sound of a moving person or object is overcome. A collision warning system comprising such a hearing protection device (10, 10?, 10?) and an external device is also provided. Furthermore, a method of retrofitting a hearing protection device (10??) with such a detection unit (30, 30?, 30?) is provided.

Abstract: The present disclosure relates to a personal protective device 100, 100?, 300, 400, 500 with local voice recognition comprising a voice receiving unit 20, 20?, a voice processing unit 30, 30?, a command processing unit 40, 40? and a control unit 42, 42?.

Abstract: The present disclosure relates to a system 10 comprising an ear cushion 20 for a headset 100, a fluid supply 30 and a fluid guide device 40 connected to the ear cushion 20. The present disclosure further relates to an ear cushion 20 for a headset 100, a fluid guide device 40 for a headset 100. Moreover, the present disclosure relates to a headset 100 as well as to a headgear 200 comprising such a system 10.