Wake Up Four Different Ways, The ShakeUp to WakeUp Dual Alarm Clock allows you to choose the wake-up option that works best for your needs: the shaker, shaker plus sound, flashing lights plus sound, or shaker plus flash, The tone is adjustable in volume up to 87 dB as well as in pitch, which is important to those with hearing losses, as certain tones may be difficult to hear, The ShakeUp to WakeUp Dual Alarm Clock incorporates Square Wave technology, a 520 Hz sound wave pattern proven to be more effective in waking people with hearing loss, children and heavy sleepers than standard alarm clocks, An alarm clock with a built-in telephone signaler that will alert you when the telephone is ringing when you sleeping, Never miss an important call again, Dual alarm options, a plug that allows you to plug your lamp in for a flashing light alarm, large display and a sophisticated, stylish form make this clock the perfect choice, Dual Alarm Clock, Built-in telephone signaler, 87 dB extra-loud alarm with adjustable tone and volume control, 12V Super Shaker bed vibrating unit included, Built-in flashing alert lights, Alarm 1, alarm 2, Display info: Multi-function 0, 9"" red LED display, SKU: CLRS026