TopOne 3.5mm White Car Wireless FM Transmitter For iPhone 5S 5C 4S iPod Samsung Galaxy S4 MP3 Cable: 1.95 FT (50cm) Effective range: 16.4FT (5m) FM Transmitter Color White, Size: 2.3"*1"*0.4" (6*2.6*1.1cm) Please charge before use, pair to phones for this transmitter then you can listen to music etc.