The SafeSound audio platform on the Coros Helmets allows you to stream your favorite music while still being aware of the trail, the sounds of the city, and the natural sounds of the world around you. Enjoy music or take calls, earbud-free, without blocking out the environment. The helmets use what is known as the Ear Opening Sound System (EOSS), a couple of tiny water-resistant speakers that are located on the straps just in front of each ear, that funnel sound into the ear canal. This also leaves the ear canals open to hear important sounds such as traffic noise, allowing you to privately listen to music or take calls while remaining fully aware of your surroundings. Also included is a handle-bar mounted smart remote, giving you complete control over your audio and call functions. You can also switch between modes on an LED tail light that is built into the helmet. The Coros SafeSound Helmet is available in three styles, road, mountain, or urban.