Enjoy music, movies, videos, voice and more like never before with a product at this price! The M21 is compatible with all devices that have a standard 3.5mm headphone jack such as iPods, iPhones, iPads, MP3 players, blackberry phones, many smart phones, portable DVD players, computers, and more. Stylish in-ear design provides passive noise reduction allowing you to play your music at lower volumes even in noisy environments. M21 In-Ear Headphone. Detail, clarity, space, enhanced bass, and of course a very cool style are what the M21 delivers. The small housing makes the M21 comfortable to wear for people with all ear sizes, and the sound will make you want to keep wearing them for as long as you can. The full range and fun sound is great for today"s pop music and electronics, but still brings excitement to other genres. The Original M Series in-ear headphones have a fun sound with enhanced bass that doesn"t intrude into the rest of the spectrum along with good clarity! MEElectronics M21in Ear Headphones * In-ear design provides passive noise cancellation * Unit has a single-button remote that controls music playback on many iPods and BlackBerrys * 6.8 mm dynamic driver is detailed with good clarity, extended treble, and enhanced bass. * M21 second generation delivers ultimate sound * Improved cable with very low cable noise * Frustration-free designer cable * Metal housings and reinforced cabling provide real-world durability * Enjoy the full dynamic range of your favorite music and movies * Works with iPod, iPhone, most BlackBerry phones, MP3 players, portable media players, CD players, DVD players and Computers * Available in several prismatic color options to match your flair for style * 4 sets of eartips (small/medium/large silicon; bi-flange) * Black Clamshell zipper case * Warranty: 1 year * Driver: 6.8 mm dynamic drivers; Housing: Metal with two-tone color scheme * 92 dB; Impedance: 16 ohms; Maximum Power Input: 20 mW; Connector: 4 pin 3.5mm gold plated 90 degree plug * Frequency Response: 20Hz - 20KHz; Sensitivity