Combining various essential portable audio technologies together, the Sony WI-C100 Wireless In-Ear Headphones work to provide you with all-day optimized sound, communication, and convenience. Starting with 9mm drivers that are tuned for balanced audio to fit any genre, Sony also adds Digital Sound Enhancement Engine (DSEE) technology to compensate for lost highs in compressed audio. An integrated mic and 1-button Siri access lets you talk hands-free, get directions, and more while leaving your phone in your pocket. The flexible neckband wire and splash-proof design is extremely convenient, allowing you to use the WI-C100 at work or the gym, and securely drape them around your neck when you’re done listening.