A hearing aid having one or more biometrical sensors, the hearing aid comprising: at least one microphone configured to receive a sound of the surroundings; a signal processor configured to process the sound received from the microphone; a speaker unit configuration configured to emit the processed sound into the ear of a user; wherein the one or more biometrical sensors is positioned substantially in the ear together with at least a part of the hearing aid, wherein the one or more biometrical sensors is configured for recording health data of a hearing aid user, wherein further, the hearing aid comprises a wireless communication interface configured to transmit at least biometrical signals recorded by the one or more biometrical sensors to an auxiliary device, wherein further the hearing aid comprises a behind the ear part having said signal processor, a battery and the one or more microphones, wherein the hearing aid further comprises an in-the-ear-part, wherein the behind the ear part is connected to the in-the-ear part via a wire configured to allow communication between the behind the ear part and the in-the-ear part, wherein the in-the-ear part comprises the one or more biometrical sensors, the at least one speaker unit configuration, and a dome, wherein at least a part of the speaker unit configuration is in communication with and/or in direct contact with the one or more biometrical sensors, wherein each of the one or more biometrical sensors is arranged in connection with the speaker unit configuration at a printed circuit board directly at a receiver of the speaker unit configuration or at a printed circuit board in close proximity to or directly connected to the receiver of the speaker unit configuration, characterized in that at least a part of the speaker unit configuration and at least a part of the dome comprises one or more sensor parts (1305, 1306) of the one or more biometrical sensors, wherein the speaker unit configuration at least comprises the printed circuit board for providing electrical communication for the data recorded by the one or more sensors, wherein at least one emitter part of a biometrical sensor of the one or more biometrical sensors is arranged in connection with the speaker unit configuration, and at least one detector part of the biometrical sensor is arranged in connection with the dome, wherein the at least one detector part is configured as a photo sensitive material of the dome. at least one microphone configured to receive a sound of the surroundings; a signal processor configured to process the sound received from the microphone; a speaker unit configuration configured to emit the processed sound into the ear of a user; wherein the one or more biometrical sensors is positioned substantially in the ear together with at least a part of the hearing aid, wherein the one or more biometrical sensors is configured for recording health data of a hearing aid user, wherein further, the hearing aid comprises a wireless communication interface configured to transmit at least biometrical signals recorded by the one or more biometrical sensors to an auxiliary device, wherein further the hearing aid comprises a behind the ear part having said signal processor, a battery and the one or more microphones, wherein the hearing aid further comprises an in-the-ear-part, wherein the behind the ear part is connected to the in-the-ear part via a wire configured to allow communication between the behind the ear part and the in-the-ear part, wherein the in-the-ear part comprises the one or more biometrical sensors, the at least one speaker unit configuration, and a dome, wherein at least a part of the speaker unit configuration is in communication with and/or in direct contact with the one or more biometrical sensors, wherein each of the one or more biometrical sensors is arranged in connection with the speaker unit configuration at a printed circuit board directly at a receiver of the speaker unit configuration or at a printed circuit board in close proximity to or directly connected to the receiver of the speaker unit configuration, characterized in that at least a part of the speaker unit configuration and at least a part of the dome comprises one or more sensor parts (1305, 1306) of the one or more biometrical sensors, wherein the speaker unit configuration at least comprises the printed circuit board for providing electrical communication for the data recorded by the one or more sensors, wherein at least one emitter part of a biometrical sensor of the one or more biometrical sensors is arranged in connection with the speaker unit configuration, and at least one detector part of the biometrical sensor is arranged in connection with the dome, wherein the at least one detector part is configured as a photo sensitive material of the dome.