Product Name: SONY MD Walkman Battery Case EBP-MZR55 Battery Case [Product Details] ・Tested and working ・Please check the photos for details as this is a layman's inspection. The model number, manufacturer name, etc. in the title may be incorrect, but the photos take precedence. Please confirm. There may be oversights, so please always prioritize the images. ■Only items shown in the photos are included. ■Please judge the condition based on the photos. Please refrain from purchasing if you are concerned about minor details.