best ones imho are the ones that are "Powered by any vehicle cigarette lighter adapter. No battery needed".
an example is: http://www.tangshop.com/mp3-fm-transmitter-usb.html
1: it doesnt use batteries which drain too fast
2. works with any portable cd player, mp3 player, laptop, etc. all you need is an audio/headphone output and thats it
theres also a coby cd/mp3 player with an intedgrated fm transmitter which powers from dc adapter.... http://www.cyberguys.com/templates/searchdetail.asp?T1=142+0404&dept=&search=&child=
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best ones imho are the ones that are "Powered by any vehicle cigarette lighter adapter. No battery needed".
an example is: http://www.tangshop.com/mp3-fm-transmitter-usb.html
1: it doesnt use batteries which drain too fast
2. works with any portable cd player, mp3 player, laptop, etc. all you need is an audio/headphone output and thats it
theres also a coby cd/mp3 player with an intedgrated fm transmitter which powers from dc adapter.... http://www.cyberguys.com/templates/searchdetail.asp?T1=142+0404&dept=&search=&child=