Bright LED Lamp can be set to flash to wake you up when the alarm time is activated and is also great for reading; Volume Control can be set extra loud for persons that need that extra to wake up; Tone Control allows you to set to high or low frequency to achieve maximum person results. Audible Alarm can be off so you do not disturb or awaken others; Bedshaker (12VDC) is connected to the alarm and placed under your mattress or pillow.