BT RUSH is the forerunner of a new generation of intercom devices that are being developed with Midland Mesh Conference, Midland's revolutionary chain-free technology. The key benefit and innovation for riders is the new style of communication: you may join, leave, and rejoin the conversation at any time, in an automated or temporary connection, in a group of up to ten people. All connectivity systems from BMW, KTM, Ducati, and others are compatible with BT RUSH. A bluetooth one-on-one discussion can include up to four people. The range of an intercom is up to 1.4 kilometers.