SMALL BUT MIGHTY - If it takes an earthquake or siren to wake you up, this classically designed clock is ideal for heavy sleepers or those with hearing loss. The 3-level adjustable shaker provides vibration alerts, and can be combined with the built-in alarm sound options including buzzer, bird, or music. EASY TO SETUP - Intuitive design allows time and alarm setting by turning the two dials. Clearly labeled buttons ensure simple operation right out of the box, with minimal shared functions for hassle-free use. CUSTOMIZABLE ALARM - Brightness is dial-controlled and adjustable from 0 to 100%, allowing a dark sleeping environment. Dual alarms accommodate different morning schedules for couples. Snooze function provides an extra 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 (vibration and USB charging are inactive without main power). 3-LEVEL ADJUSTABLE SHAKER - Offers three vibration intensities: gentle, medium, and strong. The compact shaker fits easily under a pillow or mattress and is ideal for individuals who are deaf or for those who wish to avoid disturbing a partner. Suitable for extremely heavy sleepers. DIMMER ALARM CLOCK - 0-100% dial-adjusted dimmer lets you reduce or turn off display brightness completely for a darker bedroom environment. Product Specifications: 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 x Loud Dual Alarm Clock Note: Light reflection and screen display differences may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.