High purity bio-cellulose fiber diaphragm that is very fine, low density yet high rigidity. Keeps a good balance in all ranges, with high quality sound. 24k gold plated stereomini plug. Type Close, Dynamic Driver Size 40mm Frequency Response 10~30,000Hz Sensitivity 96dB/mW Impedance 71ohm Output 1000mW Power 1x AAA (34hours play time for Alkaline) Cord Length, Shape 1.5m or 0.6m, Left, detachable Weight 186g Weight in Retail box 800g		Contents .. Panasonic rp-HC700 Headphones 1.5m and 0.6 cables Inflight seat audio adaptor Stereo plug adaptor Pouch Supplied by Authorized Resellers in Japan. 1 year Japan Warranty from the day we sent your parcel. We can help you liaise with the maker in Japan. You will pay for postages to/from our Japan office. Singapore and Malaysia buyers can bring/post to us locally. We will deliver FREE to/from Japan. Return postage chargeable.