Sonic Alert Alarm Clock with Dual Alarm Clock features a large display for those with low vision, and a loud alarm for those that are hearing impaired. This alarm clock is cost-effective, and is a full- featured bedside alarm clock with an extra large (1.8) easy-to-read display and bed shaker. This alarm clock shaker is specifically designed for the hearing impaired. The bed shaker feature automatically shuts off after 29 minutes. Equipped with dual alarms for multiple alarm setting capability. Complete with a loud 113db alarm and adjustable tone and volume control. Packaged with the most powerful 12-volt bed shaker. Complete with a hi/low dimmer switch to sleep better at night. 9 minute snooze. The Sonic Alert Alarm Clock with Dual Alarm Clock comes with a battery backup to maintain the proper time in the event of a power outage. Requires 9-volt battery (not included).