Contents of Sale:
Sony external battery case (black). Quantity 1. Used.

Summary:
Fully functional with minor callouts regarding the appearance.

Product Condition (Appearance):
Lots of small scratches and marks on the external surface of the case but nothing particularly noticeable.
There are no issues with the connectors.

Product Condition (Functionality):
The device is fully functional.
See test results and photographs for detail.

Accessory:
Sony external battery case (black)
Tested in conjunction with a Sony MZ-R900

Screw (release, lock) mechanism to attach the case to a device - OK
Power to device using a standard dry cell battery (LR6, AA) - OK

Product Information:
Sony external battery case to enable power to a device via a standard dry cell battery. 
This model is compatible with most, but not all, Sony portable MiniDisc players.
Please confirm that this model meets the requirement before purchasing.

HP-MD-113C