Importer520 Bullet Noodle Flat Cord Handsfree Stereo Earphones Earbuds with Microphone For Samsung Galaxy Centura S738C - Purple+Black Flat, tangle free cord prevents messy tangles. Specifications: Driver Unit: 10mm, Sensitivity: 115dB/1mW, Impedance: 32 ohms Cable Length: 3.9 feet, Frequency Range: 20Hz-20kHz, Jack: Gold Plated 3.5mm Compatible with: Apple iPad, Apple iPad 2, Apple iPhone, Apple iPhone 3G, Apple iPhone 3Gs, Apple iPhone 4, Apple iPhone 4CDMA, BlackBerry By RIM, Casio, HP, HP Palm, HTC, Huawei, Kyocera, LG, Motorola, Nokia, Pantech, Samsung, Sanyo, and Sharp