Assistive Technology Loan Library item === This portable symbol communication device can store 6 messages on 6 levels for a total of 36 6-second messages. Touch one of the six removable tactile symbols to activate a message and at the same time you will feel a vibration, which can be turned off if not desired. Messages can be recorded and re-recorded as often as you wish. Tactile symbols are a graphic language system using concrete or abstract representations that are both permanent and manipulated and can be tactually discriminated by an individual who is totally blind or dual sensory impaired. NOTE: One button is inactive on this device but it is still useful for trial purposes for those who may require vibration and/or tactile support. Requires 4 AA Batteries. Website: www.enablingdevices.com.