Datexx TimeCube Simple Timers - Set of 5 (DF-34567) The Cube Timer is the easiest timer out there to help control the many competing priorities in your everyday life Digital timer on the bottom shows the countdown of time left On off button for ease of use - 2 AAA batteries (not included) Great for exercise, homework, cooking , kids activities and games Excellent Time Management Tool for Home, School and Office - The Cube Timer is the perfect educational tool for teaching yourself or students time management skills and discipline