JBL fully realizes the need for quality sound, the E10 combines this with an ideal fit for todays on-the-go lifestyle. JBL E10BLKNP Synchros E10 in-ear headphones are a tablet/smart phone friendly solution opening the door to full-spectrum, JBL-quality sound thanks to PureBass performance and 8mm drivers. From essential features including a secure, comfortable fit, lightweight design, advanced styling, in a variety of colors to choose from, to their handy, inline, one-button remote/microphone, and widened frequency range; you'll enjoy more performance than you might ever expect. The added touch of including a lightweight carrying case, to safely transport your E10s, underlines their portability. Why deny yourself the best sound possible when there's an affordable, in-ear headphone that speaks so highly of your good taste?