| headphones(noun, device, electronics, listening) |
| CD player(expression, technology, connection, device, technolofy) |
| FM radio(expression, technology, connection, device, technolofy) |
| audio amplifier(expression, technology, connection, device, technolofy) |
| audio signal(expression, technology, connection, device, technolofy) |
| audiophile(noun, technology, connection, device, technolofy) |
| bluetooth(noun, technology, connection, device, technolofy) |
| bone conduction(expression, technology, connection, device, technolofy) |
| cell(noun, technology, connection, device, technolofy) |
| cell phone(expression, technology, connection, device, technolofy) |
| cellphone(noun, technology, connection, device, technolofy) |
| cellular phone(expression, technology, connection, device, technolofy) |
| computer(noun, technology, connection, device, technolofy) |
| digital audio player(expression, technology, connection, device, technolofy) |
| electrical signal(expression, technology, connection, device, technolofy) |
| electronic musical instrument(expression, technology, connection, device, technolofy) |
| feature phone(expression, technology, connection, device, technolofy) |
| hand-held phone(expression, technology, connection, device, technolofy) |
| handphone(noun, technology, connection, device, technolofy) |
| handy(noun, technology, connection, device, technolofy) |