You can even listen to music, a pod-cast, and other media all through the Bluetooth functionality. All the protection you require with added features you will love. Bluetooth Sync with mobile device. Four Hi Gain Omni Directional Microphones. Low noise/frequency tuned for natural sound clarity. 2 independent volume controls. Sound activated compression (SAC). 02 second reaction time. Sound dampening composite housing. Power source (2) AAA batteries (included).