Matching Pairs GadgetsOnline version gadgets, modern technology by Marga Czyk 1 You can switch on the tv, or change the channel with it 2 It is an optical disc to store digital data 3 You can listen to music everywhere using your 4 You can make and receive telephone calls everywhere with it 5 This device makes a loud sound at a specific time compact disc mobile phone alarm clock MP3 Player remote control