Microphones; Audio-video receivers; Audio interfaces; Audio mixers; Bathroom scales; Car video recorders; Distribution amplifiers for audio and video signals; Electric cables; Graduated glassware; Interfaces and peripheral devices for computers; Matrix switchers for audio and video signals; Measuring rulers; Power adapters for computers; Signal bells; Smoke alarms; Sound transmitting apparatus; Stands adapted for tablet computers; Transmitters of electronic signals; Tripods for cameras