Aluminium inner and outer earcup housing. CCAW Voice Coil Driver Copper-clad Alumininium Wire is a composite conductor with aluminium core and copper cladding, giving benefits of both materials. Lighter than pure copper wires. Higher conductivity and tensile strength than pure aluminium wires. Hi-OFC hybrid cord Alluminum alloy armband   Patented headrest design, a 3D wing support for wearing comfort. DADS Double Air Dampening System for deep bass extension and reproduction.

Japan Made. Highest manufacturing standard Contents .. Audio-Technica ath-A900 Headphone, 3m cord, Left trailing, gold plated stereomini plug Stereomini to stereo plug adapter Supplied by Authorized Resellers in Japan Japan Warranty 3 years on labor & parts from the day you receive your parcel. We can help you liaise with Audio-Technica Japan. You will pay for postage to/from our Japan office, and within Japan.   Type Close, Dynamic Driver Size 53mm CCAW Frequency Response 5~40,000 Hz Sensitivity 101dB/mW Impedance 40ohm Output 2000mW Cord Length, Shape 3m Hi-OFC, L Weight 350g Weight in Retail box 750g Standard Earpad HP-A900 Compatible Earpad HP-A1000