Battery chargers; Contacts, electric; Converters, electric; Electronic pens; Headphones; High-frequency switching power supplies; Inverters; Microphones; Power supply connectors and adaptors for use with portable electronic devices; Rechargeable batteries; Stands adapted for mobile phones; Voltage stabilizing power supply; Apparatus for transmitting and reproducing sound or images; Cell phone cases; Electric cables and wires; Electric plugs; Electrical plugs and sockets; Optical glasses