Headphones; Loudspeakers; Audio interfaces; Batteries and battery chargers; Cases for mobile phones; Central processing units for processing information, data, sound or images; Consumer electronic products, namely, audio amplifiers, audio speakers, audio receivers, electrical audio and speaker cables and connectors, audio decoders, video decoders, speakers, power conversion devices, power converters, and power inverters; Digital door locks; Earphones and headphones; Mobile phones; Monopods for handheld digital electronic devices, namely, intelligent digital control multimedia; Power wires; Protective covers and cases for cell phones, laptops and portable media players; Smart watches; Wireless headsets for smartphones; Downloadable software to control and improve audio equipment sound quality