AudioMX In-Ear Earbud Headphones With Dual Driver, Noise Isolating Earphones with Mic and Multi-Functional Controller for Live Video Streaming (Black) DUAL DYNAMIC DRIVERS: Engineered with high resolution 10mm + 6mm coaxial dual dynamic driver deliver extremely clear sound with powerful bass and dynamic treble; exquisite sound quality creates the ultimate listening experience HIGH DEFINITION SOUND QUALITY: Exclusive tone tuning technology enables natural and well-balanced sounds; unique sensor technique eliminates distortion caused by high frequency ERGONOMIC IN-EAR DESIGN: Soft silicone ear tips deliver noise suppression effects; 4 sizes of interchangeable ear tips to adjust to your preferred fit; ultra-lightweight design is ideal for exercising, traveling, and enjoying music on-the-go EASY AND CONVENIENT: Built-in MIC allows for hands-free calling; multi-functional control button enables you to easily control phone calls and your music at your fingertips FULL COMPATIBILITY: Compatible with all 3.5 mm audio jack smartphones and devices, including the full range of iPhones, iPads, iPods, Samsung Galaxy, Android smartphones, MP3 and MP4 music players, laptops, tablets and more Advanced high resolution coaxial dual dynamic drivers,produce powerful bass, lush mid-range notes, and crystal clear highs treble. Driver units: 10mm + 6mm Frequency Response: 50Hz - 20000Hz Sensitivity: 109dB  3dB (at 1 KHz 126 mV) Impedance: 16  15% (at 1 KHz) Distortion:  5% (at 1 KHz 1 mV) Max Input Power: 20mW Broad compatibility and convenient control system Compatible with all 3.5 mm audio jack smartphones and devices. Built-in MIC allows for hands-free calling. Multi-functional control button enables PLAY / PAUSE / FW / REV functionality. Gold Plated Plug: 3.5mm Cable Type: 1.3m Black TPE cable Designed and customized fit kit, because every ear is different, the Fit Kit includes 4 sizes (XS, S, M, L) of the ultra soft silicon sleeves. Experiment with the size and style that creates the best fit for you. A good seal is key to optimizing sound isolation and bass response as well as maximizing comfort during extended wear for everyday use.