Smart Duo is the ideal solution for those who often travel with a passenger. Whether you re going to work or enjoying a weekend ride. Smart Duo offers two independent devices, each of which can be connected to each passenger s phones or Bluetooth audio devices, while also being linked together in intercom mode. Both devices are universal. Very easy to pair. Both to the telephone and to each other. You do not need any accessories to mount the device in your helmet. Features HF 3.0 Intercom + HF 2.0 Dual Enjoy your music in stereo with 2 speakers. Answer your calls with the Voice Answer function. Listen and follow the instructions of your smartphone navigator. Talk to your passenger with other Twiins. 100% compatible with all Bluetooth mobile phones and smartphones. Intuitive: only one control button integrated in the microphone. Bluetooth V.3.0. HQ sound and noise reduction technology. HF 3.0 Intercom is 100% compatible with all Bluetooth mobile phones, smartphones and audio devices. Very easy to install, no tools are required.