Special Edition utilizes Triple High Definition MicroDrivers – a dedicated tweeter and dual woofers for incredibly spacious sound and rich bass. A newly tuned acoustic network delivers enhanced high frequency performance, while a distinctive red and gray color scheme offers an exclusive look. It is the choice for discerning professionals and audiophiles. Sound Isolating Design Sound isolating earphones were originally developed as Personal Monitor Systems to allow musicians to hear their own performances in loud onstage environments. They work by using soft, flexible sleeves to block background noise, allowing small, high-performance drivers to deliver incredibly precise sound directly to the ear. By selecting from an assortment of included soft sleeves, you are able to personalize the fit of the earphones to your ears. Triple High-Definition MicroDriver It is made up of three balanced armature drivers – one dedicated tweeter and dual woofers. A newly tuned acoustic network provides enhanced high frequency performance for the ultimate listening experience from Shure. It also includes an integrated passive crossover that ensures high and low frequencies remain distinct and defined. This allows you to hear the details of your music like never before. Detachable Cable with Wireform Fit The SE535 Special Edition features a durable reinforced cable that allows easy replacement or customization. The optimized cable length of 46” (116 cm) is perfect for on-the-go usage where shorter cable is ideal. The formable wire ensures secure placement, and over the ear configuration keeps cables out of the way. The gold plated MMCX connector has a lock-snap mechanism allowing 360 degree rotation for comfortable fit.