SHARPER IMAGE SHP890GR Premium Earbuds for Running and Sport Activities with Mic, Green Compatible With All Smartphones & Tablets, Laptops, Android, iPhones, iPads, Kindles Superior High-Definition Sound Quality With Noise-Isolating Rubber Ear Tips Answer Calls Hands-Free With In-Line Microphone Flexible, Lightweight Neckband For Stability, Tangle-Proof, Single-Sided Cable Frequency Range 20-20khz, Mic Sensitivity -503dB, Sensitivity 93 3db, Impedance 16 Ohm, Unit Driver 10mm, Plug 3.5mm Connectivity Technology: Wired