Motorola S11-HD: Move to the Music S11-HD is the only Bluetooth stereo headset that provides high-definition audio in a sweat proof design, so your wireless music stays with you in the gym and on-the-go. An advanced design protects against sweat and moisture, and a refined profile offers a lightweight, comfortable fit. High definition audio ensures you'll enjoy your music in rich surround sound. Sweat it Out Optimized for an active lifestyle, S11-HD uses advanced materials like hydrophobic acoustic mesh in a lightweight, sweat-proof design. The new ear cushion interface protects the speaker from sweat, and silicone seals protect electrical components throughout the headphones. To reduce exposure to moisture, all buttons are co-molded and the micro-USB charging cover is molded to the headphones housing with a water-proof plug. Perfect for your daily workout, outdoor adventure or just when you're out and about, S10-HD keeps the moisture out and the music flowing. Let's Get Loud Never sacrifice audio quality when listening to your tunes on-the-go. S11-HD delivers high-definition sound wirelessly right to your ears, for a top-notch listening experience. An advanced acoustic design, digital tuning and enhanced bass deliver rich, clear sound so you can hear your music the way it's meant to be heard. Hear and Feel the Difference S11-HD refines the award-winning design that redefined wireless music. The back housing is redesigned to optimize antenna performance outdoors. An angled wraparound design minimizes the appearance of your headset for a discreet look. Additional ear cushions are included to further optimize your comfort. You're In Control