Abstract: A neck strap including at least one flexible circuit board, at least two fixing structures, a positioning element, a protecting layer, and a supporting element is provided. The at least two fixing structures are disposed on two opposite ends of the at least one flexible circuit board and has a housing. The positioning element is disposed in the housing and a through groove is formed between the housing and the positioning element. The protecting layer is at least partially sleeved around the positioning element, the at least one flexible circuit board, and the at least two fixing structures. The supporting element is disposed through the positioning element.

Abstract: A headset apparatus including an audio transmitter, a control circuit, a magnetic field generator and a magnetic field sensor is provided. The control circuit is configured to generate a test signal. The magnetic field generator is coupled to the control circuit to receive the test signal and generate a magnetic field accordingly. The magnetic field sensor is coupled to the control circuit and configured to sense the magnetic field and generate a sensing signal accordingly. When the control circuit detects that the magnetic field is changed based on the sensing signal, the control circuit generates a control signal to enable the audio transmitter.

Abstract: A headset apparatus including an audio transmitter, a control circuit, a magnetic field generator and a magnetic field sensor is provided. The control circuit is configured to generate a test signal. The magnetic field generator is coupled to the control circuit to receive the test signal and generate a magnetic field accordingly. The magnetic field sensor is coupled to the control circuit and configured to sense the magnetic field and generate a sensing signal accordingly. When the control circuit detects that the magnetic field is changed based on the sensing signal, the control circuit generates a control signal to enable the audio transmitter.