3D spectacles; Earphones; Sunglasses; Tweeters; Bathroom scales; Bullet-proof vests and clothing; Burglar alarms; Car stereos; Computer keypads; Divers masks; Electronic weighing scales for kitchen use; Microphones; Notebook computer carrying cases; Pocket-sized electronic calculators; Portable digital electronic scales; Protective covers for smartphones; Seismological instruments; Slide-rules; Sound cards; Swimming goggles