This is only the right earbud of the SONY wireless earbuds "wf-1000xm4". I noticed it was in the condition shown in the photo while it was in the case, so I am listing it. The battery has deteriorated considerably, so replacement is probably necessary. Instant purchase OK! Please note that we generally do not respond to requests for price reductions. SONY Sony wireless earbuds wf-1000xm4 wf-1000xm5 wf-1000xm audio earphones airpods Sony model name: WF-1000XM4 Other features: Junk