New, unused. Purchase date: Summer 2025? Purchased at Yodobashi Camera. No receipt. *Box has some minor damage. *Only the top lid of the box has been opened. The earphones and other contents have not been touched. audio-technica ATH-CKS550X Color: Champagne Gold Series...SOLID BASS series Model...SOLID BASS ATH-CKS550X #audio-technica #SOLID_BASS #Canal #Canal type #Earphones #Wired earphones #Deep bass #Hi-Res #Hi-Res audio #Hi-Res audio compatible #Champagne Gold #ATH_CKS550X_CG #ATH #16Ω #9.8mm driver #Hi-Res #Solid_Bass #Earphones #Earphones #Ear tips #Inner ear #Audio equipment #Champagne Gold #Smartphone compatible #Solid bass #Driver 9.8mm #Noise isolation #Hi-Res compatible #Portable audio #Popular model #Emphasis on bass #Classic earphones #Sealed type #Sensitivity 105dB #Wired earphones #Beautiful condition #Deep bass #Deep bass earphones #Music appreciation #Audio equipment #High sound isolation #High sound quality Series...SOLID BASS series Model...SOLID BASS ATH-CKS550X