s designed for use when travelling.Light and compact, it is well suited for people with impaired hearing and its alarm function produces up to 70db when required. It also has an inbuilt vibrate facility so it can be placed under a pillow to ensure that the user wakes at the appropriate time. The controls on the SBP100 Sonic Shaker are very easy to use and the display is easy to read during the day or at night. It is supplied with its own travel case and pillow clasp.