Estuche de batería externa AA para Sony MD MiniDisc Walkman MZ-E520/E620/MZ-E630
E505/E510/E520/E620. SONY MD Player. SONYPortable Cassette Player. not including AA battery. 1x AA Battery case（not including battery）. Note, this is not an original accessory, this is a third-party accessory,no DC Input.