Choose between a loud tone, flashing strobe or vibrating pad to alert you when your alarm clock signals. FONT> FONT face=Tahoma size=2>In addition, the Wake & Shake can be used as a phone ring signaler so you never miss a call. This unique feature allows you to plug into the wall jack for telephone ring signaling. With the Wake & Shake Alarm Clock, you'll live more productively and enjoyably because you'll never lose one second of the day. The Wake & Shake Alarm Clock is part of the ClearSounds complete line of assisted hearing produts that are innovatively designed and competitively priced to improve your quality of life. Tone control offers 95 dB ring level volume intensity that's guaranteed to capture your attention. Flashing Strobe light breaks through sleep to wake you up. Vibrating Pad can be positioned under your pillow or mattress for a sturdy nudge out of bed. Large display is easy to read in the dark through sleepy eyes. AC powered with battery back-up (batteries not included). Telephone ring signaling option. One-year warranty. Dimensions: 7-5/8"w x 5"h x 3-1.4"d