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Sound sistem, portable radio, CD player, personal stereo, radio alarm, colour television, desktop computer, laptop conputer, video camera, mobile phone, fax (machine), video recorder, answer machine
Say which items:
1. a) run only on mains power
b)run only batteries
c)can run on either
2. you can turn up or down to adjust the volume
3. include a screen
4. you can set for certain timesor functions
5. you can use to send or receive messages