SMALL BUT MIGHTY - If it takes an earthquake or siren to wake you up, this classically designed clock is ideal for heavy sleepers or individuals with hearing loss. The 3-level adjustable shaker provides vibration alerts that can be felt clearly under a pillow or mattress. You can also pair the vibration with the built-in alarm sound options, including buzzer, bird, or music. EASY TO SETUP - Setting the time and alarm by turning the two dials is intuitive and straightforward. All buttons are clearly labeled, with minimal function overlap, making the device simple to operate right out of the box and easy to reconfigure as needed. CUSTOMIZABLE ALARM - Brightness is adjustable from 0 to 100% via a dial control, allowing for a dark, undisturbed sleeping environment. Dual alarms accommodate shared sleeping arrangements with different wake-up times. Snooze function provides an additional 9 minutes of rest. USB PORTS AND BATTERY BACKUP - One USB port on the back allows charging of mobile devices overnight. Powered by AC adapter with optional backup using 2 AAA batteries (not included) during power outages. Time, settings, and alarm functions are preserved during outages; however, vibration and USB charging will not operate without main power. 3-Level Adjustable Shaker - This vibrating alarm clock offers three intensity levels: gentle, medium, and strong. The compact design fits discreetly under a pillow or mattress. Ideal for individuals who are deaf, those sharing a bed, or anyone seeking a non-disruptive wake-up solution. Also effective for extremely heavy sleepers. Dimmer Alarm Clock - 0-100% dial-adjusted brightness control lets you reduce or completely turn off the display light for a darker bedroom environment. Ensures no unwanted light disturbance at night. Operation Mode: Electrical Shape: Round Alarm Clock: Yes Style: Classic Display Type: LCD Power Source: Corded Electric Material: ABS Color: Photo Color Package Contents: 1 * Loud Dual Alarm Clock Note: Light reflection and screen differences may cause slight color variation between the product image and actual item. Measurement may vary by +/- 1-3 cm.