Shure SE425-CL Sound Isolating Earphones are engineered to provide reference quality audio.Featuring Dual High-Definition MicroDrivers, the SE425-CL utilizes a dedicated tweeter and woofer for an accurate and balanced sound. Detachable cable with formable wire enables easy replacement and secure fit. Comfortable sound isolating sleeves in various sizes block up to 37 dB of ambient noise. Accurate and balanced sound Sound isolating design Dual high-definition MicroDrivers Lightweight, low profile shape with optimized nozzle angle designed to rest comfortably in the ear Over-the-ear configuration keeps cables out of the way Durable Kevlar reinforced cable allows easy replacement or customization Formable wire ensures secure placement Gold-plated MMCX connector with lock-snap mechanism allowing 360 degree rotation for comfortable fit Included Fit Kit comes with three sizes (S, M, L) of flex and black foam sleeves, one pair of triple flange sleeves, one pair of universal fit yellow foam sleeves, a carrying case and 1/4-inch adapter 2-Year Limited Warranty Speaker Type: Dual High-Definition MicroDrivers Sensitivity (at 1khz): 109 dB SPL/mW Impedance (at 1kHz): 22 ohms Noise Attenuation: Up to 37 dB Frequency Range: 20 Hz – 19 kHz Input Connector: 3.5mm (1/8 inch) gold-plated stereo plug Cable: 64″ Detachable (at ear) with wireform fit Color: Clear Net Weight: 29.5 grams (1.04 ounces)