For all ages and abilities this Time Timer is a must-have for individuals with perceptual problems. The Time Timers create an awareness of elapsed time which is readily visible. The use of high-colour resolution makes it possible to visualise remaining time. Each Time Timer operates on one "AA" battery (not included). Time elapses clockwise and the Time Timer can be set at any point on the face. The timer disc may be moved manually in either direction. Ideal for occupational therapy, classrooms or home use. The 20.3cm Auditory Time Timer is ideal for occupational therapy, classrooms or home use. Sold as Single Unit. Ideal for occupational or special needs therapy. Use at home or in the classroom. Red area highlights the elapsed time - 15 minutes left. Product of School Specialty.