Abstract: A mobile wireless audio transmission system is provided, comprising at least one mobile wireless transmitter for the wireless transmission of audio signals which have been recorded via a microphone in the transmitter or which have been transmitted via an audio input to the transmitter. The transmitter comprises a transmitter rechargeable battery unit. The system further comprises a mobile wireless receiver for the wireless reception of audio signals transmitted wirelessly by the at least one transmitter, wherein the receiver comprises a receiver rechargeable battery unit. The system further comprises a mobile charging/transport dock which comprises at least one transmitter receiving compartment for receiving a transmitter and a receiver receiving compartment for receiving a receiver and a rechargeable battery unit as power supply.

Abstract: There is provided a microphone unit (1) for an action camera, comprising a microphone capsule (10) having at least one speaking hole (11), and a water-tight enclosure (20) which water-tightly encloses the microphone capsule (10). The water-tight enclosure (20) has a water-impermeable passive diaphragm (25) which can oscillate freely and which allows incoming sound to pass substantially undisturbed. The microphone unit has a head (30) having a plurality of holes (31), the head (30) being provided outside the enclosure (20) in front of the passive diaphragm (25). The microphone unit further has a foam portion (40) which is provided in front of the head (30) and has an open-pore foam. The foam portion (40) is in contact with the head (30). The passive diaphragm (25) has an oscillatable minimum area of 20 mm2; wherein the foam portion (40) has pores which are sufficiently small so that the foam portion (40) can suck water residues away from the holes (31) in the head (30) like a sponge.

Abstract: There is provided a headset having a holder which is of such a shape or configuration that it can be laid around the base of an ear of a user. The holder has a first end and a second end. The headset has an earmold unit or an ear fitting portion having an electroacoustic reproduction transducer and also a plug unit for electrical and mechanical contacting of an earmold unit or an ear fitting portion. The plug unit is provided at the first end of the holder. A boom arm with a boom microphone is fixed by means of a fixing unit at the second end of the holder.