Easy to use: easy to install and use, equipped with instructions. Two AAA batteries. If you have any questions about our products, please contact us without hesitationQuiet and undisturbed back to school supplies: without the noise of a mechanical clock, there is no need to listen to ticking sounds, and the sound remains silent during the countdown. Only when the countdown ends will a prompt sound be emitted. It helps you manage your time better and manage your study and work tasks more easilySuitable for teachers and students: it can be used to treat attention deficit and hyperactivity disorder, as well as teach children time concepts, play board games, and plan reading breaks. Can be used as a shower timer, kitchen timer, classroom timer, meeting timer, pomodoro timer clock, interval timer, egg timer, pasta timer, adhd tools for kids and adults, workspace organizers & desk accessories, daily planner tools and teacher must havesTimer, clock, and alarm 3 in 1: as a regular clock, there are two display modes of 12/24 hours, which can be switched. As a timer, including a countdown timer and a counting-up timer, the orange circle countdown achieves a good visual effect. Desktop design, place the timer on the desktop and view it from a non-flat angle for better visual effects. The classroom must have timer comes in two colors, white and pink, with a portable size of 3.15* 3.15 inchesVisual digital timer with LCD screen: strong readability, simple working principle, rotating the knob can increase or decrease the time, with an increment of 1 minute and a maximum of 60 minutes. Countdown to time, the orange ring decreases by one piece per minute. Press the knob to start or stop, and when paused, hold down the knob to reset the timer to 00:00