Communication system and device

1. A communication system for a helmet, comprising a docking station located at a rear portion of the helmet and affixed to the helmet, and a detachable portion adapted to be connected to the helmet via the docking station, wherein the detachable portion comprises pressure-activated elements, which, when the detachable portion is connected to the helmet, are located at a distance of at least 4.5 centimeters, measured from a center of the rear portion of the helmet to an edge of the pressure-activated elements closest to the center of the rear portion of the helmet, which is not an on/off switch, allowing the pressure-activated elements to be easily reached by fingers of a wearer of the helmet,

wherein the detachable portion comprises an antenna, which is located near an end of the detachable portion that, when the detachable portion is connected to the helmet, is the farthest from the center of the rear portion of the helmet on a side of the center of the rear portion of the helmet where the pressure-activated elements are located,

wherein the antenna is housed in a housing of the detachable portion.

2. A communication system according to claim 1 , wherein the docking station is located on a trim of the helmet.

3. A communication system according to claim 1 , wherein the distance from the center of the rear portion of the helmet to the edge of the pressure-activated elements closest to the center of the rear portion of the helmet, which is not an on/off switch, is approximately 6.5 centimeters.

4. A communication system according to claim 1 , wherein an on/off switch is provided separately from the pressure-activated elements.

5. A communication system according to claim 1 , wherein the pressure-activated elements include discrete keys.