[. . . ] [. . . ] Embedded PLC (Packet Loss Concealment) technology allows real-time compensation of audio losses in challenging environments and makes your conversations sound clearer than ever. Thanks to MDC (Multiple Device Connection) technology, the scala rider Q2 pro allows bikers to receive GPS voice instructions, communicate with other bikers or with a passenger on the back seat via intercom, conduct calls on their mobile phones and listen to music and radio. Entertainment features now include wireless A2DP stereo music or MP3 player connection via cable as well as built-in FM radio with RDS. Special Features Include: · · Bike-to-Bike Intercom: Alternate between 2 other riders within a range of 700m / 2, 300 ft* Rider-to-Passenger** communications: Both Rider and Passenger using Q2 pro headsets can communicate via intercom as well as independently conduct mobile phone calls, listen to MP3 music in stereo or to the built-in FM radio. Full Duplex: No longer the walkie-talkie syndrome where one party can only speak when the other is silent. [. . . ] [. . . ]