Sony MDR-AS40EX Active Style Headphones Earbud Style - Black (Certified Refurbished) This Certified Refurbished product is factory refurbished, shows limited or no wear, and includes all original accessories plus a 90-day warranty Neodymium drivers provide a wide frequency response with deep bass and crystal clear treble Moisture guard for moisture to pass around head phones Hangers can be removed for use as standard earbuds Gold-plated 3.5mm stereo mini plug for wide compatibility