Alert device, system and method for alerting hearing-impaired persons through a sensory of a sound and the location of such sound. The device extends to the tracking of an object within a predefined perimeter, outside of which an alert is triggerable. The device includes a wearable unit having a plurality of differently colored LEDs and a plurality of differently colored sound-detecting units, with each of the differently colored sound-detecting units corresponding to the same colored LED's on the wearable unit thereby to color code the wearable unit to the sound-detecting units. When a sound is detected by one or more of the sound-detecting units being higher than a predetermined threshold sound, a sound event signal is triggered on the wearable unit activating a vibration and blinking of the LED's corresponding with the respective sound detecting unit, consequentially alerting a user of the location where the sound-detecting unit was previously positioned.