Product details:

Mesh 2.0 for communication in large groups up to 24 participants. Bluetooth 4.1 for communication up to 4 participants - also with older models. Up to 8km range in mesh or up to 2km in Bluetooth mode. Battery runtimes of approx. 9h in mesh or 14h in Bluetooth mode. Fast charging (up to 6h runtime after 20 minutes of charging). Auto firmware updates via WiFi cable. Yusatz mounts available for use on multiple helmets. Oompatible with smartphone app ( 30K Utility).