Loudspeakers, headphones, microphones and CD players; Sound systems comprising remote controls, amplifiers, loudspeakers and components therefor; Smart glasses; Humanoid robots with artificial intelligence (AI) for assisting humans in exhibition tour guides; Humanoid robots with artificial intelligence for assisting humans in concierge duties and tasks; Sound recording apparatus; Earphones; Smartwatches; Picture projectors; Electronic devices for detecting and locating lost articles, people, ...