GranVela RM-501 High Resolution Heavy Bass In-ear Headphones with Mic Ergonomic Comfort-Fit Noise-Isolating Earphones for SmartPhones (Blue) The earphones shape was designed with an emphasis on ergonomics ensure the earphones sit securely and remain comfortable even during prolonged periods of use. 16-ohm impedance is ideal for use with cell phones, tablets and portable music players. HiFi lossless cable and gold plated jack effectively reduces signal loss, Gold-plated jack contact surface to prevent oxidation, and provides better audio restoration. Soft silicon eartips (S, M, and L size included) to optimize fit for comfort and sound quality. Compatible Models: Built-in mic lets you talk hands-free on your device, 100% fits Android device like iPhone 6/6S Samsung S6 S5 Note 4 Blackberry Nexus and other Smart Phones.