mobile power supply [rechargeable batteries]; power banks; data cables; charging cables for smartphones; cases and covers for cell phones; electrical plugs and sockets; converters for electric plugs; plug adaptors; crystalline silicon solar power cells; portable solar panels for generating electricity; flash card readers; USB card readers; earphones and headphones for mobile telephones; wireless chargers; wireless charging mouse pads; smartwatches; wearable technological devices being smartwatches, connected bracelets [measuring instruments] and head-mounted displays