Batteries, electric; Body fat scales for household use; Cabinets for loudspeakers; Cameras; Cell phone battery chargers; Earphones; Electric door bells; Electronic pens; Humanoid robots with artificial intelligence; Mobile phones; Radio transmitters and receivers for remote controls, radio controls; Security surveillance robots; Smart rings; Smartwatches; Switches, electric; Video baby monitors; Virtual reality glasses; Wearable activity trackers; Wearable cameras; Wrist-mounted smartphones