The HJC IS-MAX II Bluetooth Motorcycle Helmet is a revolutionary helmet that combines safety and communication technology. It features a built-in Bluetooth system that allows for wireless communication with other riders. The helmet has a range of up to 400 meters and supports intercom communication with up to four riders. It also has a built-in FM radio and supports hands-free calling. The HJC IS-MAX II is DOT approved and offers excellent protection with its advanced polycarbonate shell.