Even the deepest of sleepers will wake up to Diglo's Clarity Wake Assure Alarm Clock. A strong bed shaker, plus a 85+dB loud alarm, are designed to get deaf and hard of hearing patients out of bed at the time they need. The clock has a simple and modern design, making it easy for users to set the clock and alarm time in just a few short minutes. The tone and volume can also be adjusted to suit an individual's specific preferences. The clock is 8 inches wide and 4.5 inches tall, perfect for placing it on any nightstand or end table. A super-bright LCD display lets patients see the time clearly, even in total darkness. The display size is 1.8 inches, ideal for those with vision impairments. The included lamp flasher increases visibility. Just like standard alarm clocks, the Clarity Wake Assure Alarm Clock is equipped with a snooze button so patients can get a few more minutes of rest if they want to. While this alarm clock with a bed vibrator works by being plugged into a standard electrical outlet, it is also equipped with battery backup. This backup uses a 9V battery, which is not included with the purchase of the alarm. The loud alarm is ideal for patients who are hard of hearing, while the bed shaker works to effectively wake up deaf individuals. You never have to worry about sleeping through your alarm again with the Clarity Wake Assure Alarm Clock from Diglo.