[ Batteries, electric; Blank USB flash drives; ] Cables, electric; [ Earphones; Megaphones; Periscopes; Sound transmitting apparatus; Telescopes; Battery chargers; Cases for smartphones; Converters for electric plugs; Data processing equipment, namely, couplers; Electrical plugs and sockets; Fibre-optic cables; Rechargeable batteries; ] Stands adapted for mobile phones [ ; Wearable activity trackers ]