A Bluetooth headset can enhance your ride, whether you're enjoying music on the open road as a lone wolf or chatting with others at the head of the pack. The Smart HJC 21B Bluetooth Headset makes it even easier to enjoy the ride by integrating seamlessly with your HJC helmet! The 21B features a 4-way universal intercom with a max range of 1.6km (0.9 miles), so you can keep in touch with your traveling companions and even share music at a distance. Universal intercom compatibility connects to other brands of headsets.