Serene Innovations SNHCSSHAKER Serene Bed Shaker

For vibrating alerts, connect the Serene Bed Shaker to any Serene Innovations product with a 3.5mm jack. Shakers are perfect for anyone with hearing loss who can't hear audio alerts. Use it with an alarm clock, for example. When your alarm goes off, the shaker (under your mattress or pillow) vibrates to wake you up. You can even use the Bed Shaker with a cell phone for vibrating alerts to texts and calls.