Audio speakers; Calculators; Loudspeakers, headphones, microphones and CD players; Stands adapted for mobile phones; Wireless headsets for smartphones; Motorcycle helmets; Mobile telephones; Computer keypads; Microphones; Sun glasses; Video projectors; Smartwatch straps; Swimming goggles; Intercoms; Electronic signaling mechanism, namely, a train control system used in the railway industry for detecting and controlling trains, ground faults, broken rails, power failures, track switches and li...