Thank you for visiting. This is an audio-technica earphone. It is the audio-technica ATH CKB50 balanced armature BA earphone. audio-technica audio-technica Wired earphones ATH-CKB50 Color: White Used for less than 2 hours. The ear tips attached in the photos are XS, and the other ear tips are unused. The condition is good. We are looking forward to hearing from those who are interested. The following is the description: "・Comfortable fit allows you to hear deep bass. ・Equipped with a balanced armature driver that allows you to hear deep bass with a comfortable fit. ・Equipped with a newly designed balanced armature driver. ・Tight bass reproduction allows you to enjoy high-quality sound that is pleasant to listen to regardless of the music genre. ・Loop support that provides a secure fit. ・Our unique loop shape pursues stability when worn. It achieves a secure fit in the ear. ・Small and lightweight body that is comfortable even for long listening sessions. ・1.2m cord/L-shaped plug, perfect for connecting to portable devices. ・Includes ear tips in 4 sizes for the best fit."