Headphones & Earphones
Koss UR40 Lightweight Over-Ear Stereo Headphones for iPod, iPhone, MP3 and Smartphone - Silver
Frequency Response - 10-20,000 Hz and Impedance - 60 ohms Wide, 15 to 22,000 Hz frequency response Titanium-coated, high-polymer diaphragms deliver accurate sound Neodymium iron boron rare-earth-magnet structures for accurate sound reproduction...
https://www.bizrate.co.uk/headphones_earphones/koss-ur40-lightweight-over-ear-stereo-oid1664078012.html