The compact communication module Bike-to-Bike facilitates wireless communication not only between the driver and the pillion passenger, but also between up to twelve members of a motorcycling group. The water- and dustproof module is encased in a robust and ergonomic rubber frame. The control elements guarantee effortless handling, even while wearing motorcycle gloves. The device, which can also be attached to bags, cases and items of clothing, fits the common BMW Motorrad Navigator cradle for charging and for connecting to the multi-controller at the handlebar.