Shake yourself awake with this tiny under the pillow vibration alarm without disturbing others in the house. Great for anyone hard of hearing or with sight limitations. Simply place under your pillow and the alarm will wake you by vibrating. Helps visually or hearing impaired as this is an alarm you feel. It has a Compact design for travel use or in the home and temperature display, snooze and backlight featuresUses 2 x AAA batteries (not included).