Features:

• No cell phone required for rider to passenger intercom!!!
• Syncs with Bluetooth Phones, GPS, and Music Devices
• Mounts to almost any helmet in less than 5 minutes. 2 Slim Stereo speakers mount with velcro
• Module is snap off design to remove from helmet if helmet is left on bike.
• Intercom Unit allows hands free wireless communication with passenger, conference calls with passenger etc.

Rating : - Works for me
The Scala Rider set works quite well most of the time. I mainly use it as an intercom with my passenger (wife). She has the main unit so she can receive or place phone calls. I would prefer a bit higher volume when using ear plugs (long rides).