Access 4 Loud Vibrating Alarm Clock with flashing LED Lights and Telephone Ring Signaler - Great for Deep Sleepers - 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. When the alarm time is activated strong vibrations are sure to awaken you. you can also Use the Bedshaker option without the audible soubd Telephone Ring Signaler lets you know that the phone is ringing. LED Lamp flashes with each ring of the telephone. When the optional Bedshaker is connected vibrations also alert you that the telephone is ringing.