*Comes in Original Box, Slightly dusty from Storage* No more fussing with messy wires, The MDR-RF925RK wireless headphones system gives you the freedom to travel up to 150 feet from your sound source while delivering stereo quality sound, This system includes Ni-MH rechargeable batteries - 900MHz RF wireless transmission and headphones with a 40mm driver for deep bass. An auto tuning feature conveniently scans up and down the band to automatically tune in channels. The MDR-RF925RK wireless headphones system enables an easy connection to a wide variety of sound sources. Package Contents - MDRRF925RK Wireless Headphone Rechargeable Ni-MH Battery Pack, Stereo connecting cable Cord Length (Approx.) : 39 3/8 in. (1.0 m) . 150ft max signal reception 900MHz RF wireless transmission, FM stereo sound Induction charging: not direct pin contact Volume control on ear piece, auto power On/Off Charging time approx 16H; Battery life up to 15H, AC Adaptor (DC 12V) included Earpiece--Earpiece Controls--Volume::Earpiece--Driver Type--Neodymium::Earpiece--Driver Size--1.57"::Physical Characteristics--Form Factor--Ear-cup *This product is Re-certified. A re-certified product is one that is returned by a customer, for whatever reason, and then restored to original working condition after undergoing an intensive inspection process by qualified technicians. The re-certified product is then offered at a substantially discounted price. All stock of our current products are guaranteed to be in working condition and have been successfully tested for optimal performance. 14 day return policy.