MESH NETWORK WITH SUPERIOR RELIABILITY: With just one press of a button, the 30K instantly connects with an almost unlimited number of users within a 1.6 km radius in the Mesh network. Featuring extremely stable connectivity, the 30K continuously searches for lost connections and automatically rebuilds them as soon as the rider is back in range without disrupting the rest of the group. HIGH-DEFINITION SPEAKERS FOR ENHANCED SOUND EXPERIENCE: Sena's premium HD speakers are designed to improve both comfort and audio performance. With boosts in volume, bass, and sound quality, the speakers also feature a beveled edge to easily fit into helmet speaker cutouts. AUDIO MULTITASKING WITH SENA 30K: An additional BLUETOOTH® chip allows for Audio Multitasking™, enabling a Mesh 2.0 Intercom conversation while simultaneously handling Bluetooth functions like streaming music, answering or making phone calls, and GPS navigation. BETTER CONNECTIVITY THAN EVER: Connect with almost unlimited users on Mesh network devices in Open Mesh or with 24 riders in Group Mesh. Additionally, up to 3 extra Bluetooth intercom users can be connected and included in the Mesh group. GENERAL: Dimensions: Main module: 102 x 56 x 27 mm; Speaker: Driver unit 40 mm – thickness 6.5 mm; Boom microphone: length 190 mm; Cable between speakers: length 555 mm; Weight: Module: 61 g; Operating temperature: -10 ?C – 55 ?C. BATTERY: Talk time: Bluetooth Intercom: up to 11 hours; Mesh Intercom: up to 10 hours; Charging time: 2.5 hours; Type: Lithium-Polymer; Quick charge function: 20 minutes of charging for 2 hours of Bluetooth intercom or 2 hours of Mesh Intercom connections. AUDIO: Advanced Noise Control™; Integrated SBC Codec; HD speakers; Aux Out: 3.5mm port. BLUETOOTH: Bluetooth 5; Headset Profile (HSP); Hands-Free Profile (HFP); Advanced Audio Distribution Profile (A2DP); Audio/Video Remote Control Profile (AVRCP). INTERCOM: Range: Bluetooth intercom: up to 2 km in open terrain; Mesh intercom: up to 2 km* in open terrain. *Can be extended up to 8 km with a minimum of 6 riders connected. Supports up to: Bluetooth Intercom: 4 riders; Open Mesh Intercom: unlimited riders; Group Mesh Intercom: 24 riders; Channel support: Open Mesh Intercom: 9 channels.