The vibrating alarm clock is specifically designed for heavy sleepers, seniors, and those with hearing impairments, offering three wake-up modes: vibration, sound, or both. The 71.8-inch long wired bed shaker can be placed under cushions or mattresses to ensure you never miss your wake-up time, even if you're a deep sleeper. | Dazzed Corner | | Alarm Clock with Bed Shaker, Dimmable LED Digital Dual Alarm | White Digit | Best Buy