A compact design with robust sound - the KDX/300 is lightweight with an in-the-ear design that delivers accurate acoustical reproduction, deep bass and unbelievable isolation typically found in closed-style stereophones. The KDX/300 features a dynamic element that is positioned just outside the ear for extended frequency response. The KDX/300 includes small, medium and large silicone ear cushions for a customized fit to enhance isolation when you want to eliminate ambient sounds that interfere with the listening experience.   Type Seal, Dynamic Driver Size ?mm Frequency Response 10~20,000 Hz Sensitivity 102 dB/mW Impedance 16 ohm Output ? mW Cord Length, Shape Straight, Dual Entry, 4ft Weight ? g Weight in Retail box 80g

Contents .. Koss KDX300 InEarphones with 4 feet cord ending in stereomini plug 3 pairs Silicone earbuds (S, M, L) We are Authorized Reseller. International Lifetime Warranty Liaise with your regional Koss. If unavailable, we can help you liaise with the Singapore distributor for a fee of SG$20. You will pay for postage to/from our Singapore office.