A:AnswerThere is a 3.5mm headphones jack for listening with headphones. Yes you can. Simply connect a 3.5mm cable ( not included) from the headphones jack of the digital recorder, to your car stereo 3.5 audio in port designed for any mp3 player.
A:AnswerYou can also charge the battery by using an AC-U501AD USB AC adapter,(not supplied) for on the go charging.
If you have a long recording session and require additional power, the ICDUX512 is versatile and you can substitute the rechargeable battery with a AAA Alkaline battery if necessary.
A:AnswerThe ICDUX512 has a speaker located on the back of the unit.
For a visual look at the rear of the unit please visit the link below and access the operating instructions page #9
http://esupport.sony.com/US/perl/model-documents.pl?mdl=ICDUX512
A:AnswerThe recorder can use NH-AAA-B2KN rechargeable batteries with a separate battery charger, when the AC adapter is used it will not charge the batteries internally.
A:AnswerPlease contact Best Buy directly for assistance on this question - just click on the "Customer Service" link under "Order Support" and an associate will be happy to assist.