Importer520 Bullet Noodle Flat Cord Handsfree Stereo Earphones Earbuds with Microphone for HTC My Touch 4G Slide - Black+Red 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