[ Battery chargers; ] Blank USB flash drives; [ Cabinets for loudspeakers; Calculators; Cameras; Cases for smartphones; Data processing apparatus; ] Electric door bells; [ Electric navigational instruments; ] Electronic pens; [ Headphones; Optical lenses; Protective films adapted for smartphones; Rechargeable batteries; ] Selfie sticks; [ Smart watches; Smoke detectors; Video screens; ] Wearable activity trackers