Taking the original Stilo DG-30 digital intercom, however this Bluetooth version (AB0601) uses your phone handset instead of the built in sim card module of the original (AB0600) intercom. As more and more countries phase out 2G networks, using the phone handsets network makes more sense, and future proofs the system, allowing it to be used anywhere in the world. The DG-30 has been successfully used within the WRC for many years, and continues to be with M-Sport now specifying this Bluetooth DG-30 digital intercom in all their new builds. The radical design of the intercom offers pre-programmed digital noise cancelling technology for dramatically improved clarity and performance. Different voice audio settings via the EQ button and various levels of digital noise cancelling to suit various noise levels of cars, the adjustability of the DG-30 is unmatched.Individual volume controls with 3 audio quality settings (EQ button) that can adjust the vocal pitchDigital active noise cancellati