Portable Vibrating Alarm Clock for Heavy Sleepers Adults and Hard of Hearing: this wireless bed shaker alarm clock takes no risk of connection loose like other wired vibration alarm clock, you can carry the portable alarm clocck to anywhere you want, put it on nightstand, bed and mattress, under the pillow or your quilt. A long rope is provided and you can tie the travel alarm clock to your bed or desk so it won't get lost. 5 Shaking Levels and 2 Wake up Mode: the vibration strength of this vibrating bed alarm clock is 20%-40%-60%-80%-100% 5 levels optional. Beside that, you can also choose to wake up to the vibrating alarm only or both the beeping alarm and the vibrating alarm, definitely a great bedroom alarm clock for light sleepers, deep sleepers, adults, the deaf without hearing aids, hearing impaired, HOH, for teen boys, kids, yong adults, college students and anyone. Let's put an end to sleep through the alarm or miss vital schedule! Rechargeable Battery Operated A