Cameras; Eyeglasses; Headphones; Loudspeakers; Scales; Smartwatches; Bicycle speedometers; Chronographs for use as specialized time recording apparatuses; Computer keyboards; Dog whistles; Electric door bells; Electronic collars to train animals; Electronic pens; Ink cartridges, unfilled, for printers and photocopiers; Photography projectors; Smoke detectors; Tyre-pressure measurers; Automatic pill counters; Computer mice; Warning bells