Assistive listening device not for medical purposes; Audio amplifiers; Audio headphones; Bone conduction earphones; Earphone accessories, namely, earphone cushions, earphone pads, earphone cases, and earphone extension cords; Gaming headsets for playing video games; Headphones in the form of sleep masks; Headsets for telephones; Noise cancelling headphones; Smart watches; Smart rings; Soundbar speakers; Sunglasses incorporating wireless speakers and microphones; Wearable activity trackers; Wi...