Sony Portable CD Player (D-EJ621)

hey guys what's up today i'm going to show you my sony cd walkman d dash ej621 i will tell you in advance there will be no sound demo because i do not want to get slammed with copyright infringement so let's get going first see the buttons there's play mode replete or enter repeat and sound you have your rewind fast forward play pause and stop then here's a display which does not have a backlight there's your volume your plus and your minus your open and close this will accept a remote here's your headphone jack there's where the g protection wrist strap would go your ac power then your line out jack then your hold button button that's all i want okay here's the battery compartment unfortunately as you'll see i bought all these used except for one and this one is the only one that came with battery acid on it unfortunately i do not know how to get battery acids off if anyone can tell me