[ 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-m...