Ear buds; Earphones; Headsets; In-ear electronic sensors for noise dosimetry, head motion, temperature, pressure, photoplethysmography (PPG), electroencephalography (EEG), and sweat, not for medical use; Wireless in-ear communication devices for the transmission of voice, data, and audio content; Downloadable software for recording and processing in-ear sensor data

Ear buds; Earphones; Headsets; In-ear electronic sensors for noise dosimetry, head motion, temperature, pressure, photoplethysmography (PPG), electroencephalography (EEG), and sweat, not for medical use; Wireless in-ear communication devices for the transmission of voice, data, and audio content; Downloadable software for recording and processing in-ear sensor data