TDK EB900 in ear headphones, built to deliver high fidelity audio & superior comfort during extended wearing Key Features Plug type: 3.5 mm gold-plated Driver Diameter: 8.5 mm Frequency response: 20–20, 000 Hz Sensitivity at 1 KHz: 101.5 +/– 3 d B Input impedance: 16 ohms Built to deliver high fidelity audio & superior comfort during extended wearing, the TDK Life on Record EB900 headphones provide a premium listening experience. New 8.5 mm, high performance drivers provide dynamic sound across a wide spectrum including superior bass. The unique, ergonomically shaped earphones enhance comfort while Comply™ foam tips provide a near perfect in-ear seal to block external noise. The braided cable, another stand out feature, virtually eliminates the problem of tangles & provides an upscale feel & look.