| headphone amplifier(expression, technology, connection, device) |
| high fidelity(expression, technology, connection, device) |
| in-ear monitor(expression, technology, connection, device) |
| laptop(noun, technology, connection, device) |
| mobile(noun, technology, connection, device) |
| mobile handset(expression, technology, connection, device) |
| mobile phone(expression, technology, connection, device) |
| mobile telephone(expression, technology, connection, device) |
| personal computer(expression, technology, connection, device) |
| phone(noun, technology, connection, device) |
| phone jack(expression, technology, connection, device) |
| portable media player(expression, technology, connection, device) |
| radio(noun, technology, connection, device) |
| radio wave(expression, technology, connection, device) |
| smartphone(noun, technology, connection, device) |
| tablet(noun, technology, connection, device) |
| telephone(noun, technology, connection, device) |
| telephone operator(expression, technology, connection, device) |
| touchtone phone(expression, technology, connection, device) |
| video game console(expression, technology, connection, device) |