Liven up your trim sessions with music! The Bluetooth Infinity Stereo comes with The Silver Bullet system, which is an upgraded version of the CenturionPro Original. Made of waterproof and marine-grade components, the stereo is a great addition to your machine. Plus, it is easy to connect your phone or MP3 player via Bluetooth, USB or AUX inputs. In addition to the Bluetooth stereo, the upgrade also includes a silencer that offers 30% noise reduction. These extra accessories are just another reason to consider making your next machine an upgrade!