Contents of Sale:
Sony MZ-E510 MiniDisc player (silver, orange). Quantity 1. Used.
Sony external battery case. Quantity 1. Used.
Sony Neige 80 minute recordable MiniDisc. Quantity 1. New and unopened.

Summary:
A fully functional device with callouts regarding power and the appearance.

Product Condition (Appearance):
The front face is in good condition with no significant callouts.
The rear face has significant surface damage due to battery leakage in the past. This also affects some of the sides of the device.

Product Condition (Functionality):
The device cannot be used with an internal battery.
However, the device is fully functional when using an external battery case and AA battery (AA battery is not included in the sale).
See test results and photographs for detail.

Player / Recorder Unit:
Sony MZ-E510 (silver, orange)

Power Via Rechargeable Gum Battery - Not possible
Power Via External Battery Case - OK
Power Via Charging Stand - Untested
Audio Playback - OK
Audio Output - OK
Group Button - OK
Volume Down - OK
Volume Up - OK
Play / Pause Button - OK
Next Track - OK
Previous Track - OK
Stop Button - OK
Hold - OK
Disk Insert - OK
Disk Eject - OK

Device Setting Details:
AVLS set to OFF
Beep set to ON
Backlight set to AUTO
Power Mode set to NORMAL

Product Information:
The Sony MZ-E510 is the penultimate iteration of the 5xx series of MiniDisc players (500,501,505,510,and 520). It is dedicated to disc playback, and does not have disc recording functionality.
Released in 2003, it features support for MDLP, anti-shock 'G Protection', a six band equalizer, and ATRAC type S technology.
It weighs 67 grams without a battery or disc installed.
It has a 3.5 mm headphone jack for audio output.