Sena uses an advanced Bluetooth technology called Mesh-Network that allows users to connect to a virtually limitless number of riders. It also offers a more flexible connection as riders can come or go and automatically reconnect to the group. You can pair with any Sena Bluetooth headset or helmet, automatically allowing them to join an Open-Mesh intercom group. We think the best option is the SENA 30K-01 Motorcycle Bluetooth Headset as it has brilliant features along with excellent quality.