Features Bluetooth 5.0 technology.Mesh 2.0 enhances communication response by 25% from previous iterations; connects up to 1.2 miles in open terrain.Communicate with up to 24 participants through Group Mesh.Multi-channel Open Mesh intercom features nine channels available in open mode which allows the rider to switch frequencies and communicate with a new group; allows up to six people to talk simultaneously while others listen in.Connects via Bluetooth or the all new Sena 50 Utility App.PART #4402-0846 features a simplified layout with three-button functionality; PART #4402-0844 features a versatile Jog Dial for effortless operation.Features multi-language support and direct digital assistance; can be used with Google Assistant and Siri through voice commands.HD speakers are slimmer and trimmed around the edges for a comfortable fit with a helmet on; audio output delivers crystal-clear sound quality.Included WiFi adapter recharges device and automatically installs firmware updates; features a fast-charge battery that charges 30% faster than predecessors.Dual kit includes two single kits in one box