Sony MZ-R55 Portable MiniDisc Player and Recorder

this is the world's smallest recording minidisc walkman according to Sony it has a compartment for a rechargeable battery three volt but them you can also use this compartment with two one and a half month batteries you screw this on top and then you get four hours playback and to have a recording time we seal it with a mini disc this is a mini disc which gives the 60 minutes recording hi to listen I have to connect a headphone but since I connect a remote control I will block the headphone outlet so if we look at the remote control there is an inlet for the headphones so there are various switches on the remote control the boss on this side we have line input microphone input and a line output on the other side synchronized record from CDs and automatic volume level system and on the bottom microphone sensitivity let's listen to an old microphone recording that I made a long time ago [