Alarm Clock with Bed Vibration Function - Bed vibration function provides a wake cue for heavy sleepers, and offers an alternative when loud sound may disturb others or for hearing-impaired users. Loud Alarm Clock - 110 decibel alarm ensures you wake up, with 4 volume control settings to choose the level that wakes you comfortably and on time. Alarm Clock with Large Blue LED Display - Digits are 2.56 inches high, making the time easy to read from across the room and visible even from a distance. Adjustable Brightness Digital Clock - Display brightness has 5 levels, allowing you to brighten for daytime use and dim at night to avoid disturbing your sleep. Use scenarios - In a shared bedroom: rely on bed vibration as a wake cue while using the alarm as a backup, so you wake without disturbing a partner. - For hearing-impaired users: clear vibration cue plus a large visual display helps you wake and read the time reliably. - Night or early shifts: adjust brightness to a comfortable level at night and quickly glance at the time from across the room.