[EASY TO USE] - Turn the clockwise to adjust the time. It alarm when the time is up. This visual countdown timer alarm can set the tone to loud or low, and the alarm time to 3 or 60 seconds. Requires 2 "AAA" batteries (Not Included). [TIME MANAGEMENT TOOLS] - Visual Timer overcomes the inability of traditional to concretize the abstract concept of time. The visual depiction of "time remaining" enables children, students, teachers and adults to practically improve their time management, alleviate anxiety, refuse procrastination, and increase productivity. [SPECIAL NEEDS] - The classroom timer utilizes a disk to show the time left so that children can intuitively understand the passage of time. No distracting ticking, children can focus more on completing tasks. Perfect for special populations and people with constant anxiety. Recommended for all parents and teachers. [MULTIPURPOSE] - The advantage of this timer is to cultivate good time management habits, suitable for early education, schools, homes, and offices. Make great study timer, teacher timer, classroom timer, countdown timer, silent , kitchen , toddler , kids , and more!