The base model of the Smart HJC 2nd generation Bluetooth communication system features an all-in-one design that is fully integrated into the helmet, allowing you to feel the optimal weight distribution and aerodynamic performance while riding. It is based on the BT5.1 Ultra Low Power System and 2-way Bluetooth intercom functions. The improved features of the sound system include audio multitasking, sound adjustment, advanced noise cancellation and much more. The 2nd generation Smart HJC is also equipped with HD speakers that enrich medium to low tones.