Description: Traffic Light Design: This visual timer features a traffic light design consisting of red, yellow and green indicator lights. The red light indicates that the time is up, the yellow light indicates that the time is about to end, and the green light indicates that the timer is running. This intuitive system can help children easily understand the passage of time Time Awareness: This countdown clock is designed to help children manage their study time, homework and other tasks by providing clear visual cues to improve concentration and efficiency Silent Countdown: This children timer runs without ticking, which is great for quiet environments such as classrooms or learning areas Easy to Understand for Children: This time management tool is equipped with digital and color indicators, allowing children to grasp the concept of time without reading traditional clocks. It is very suitable for preschoolers and elementary school students Multi Function: This Traffic Light Visual Timer is easy to use and portable, suitable for kindergartens, schools and home education places. With just the of a button, it becomes an essential tool for cultivating self discipline in elementary school students Specification: Power:3 AAA(Included) Note: Do not rotate the knob over "0" minute to avoid damaging the timer. Color: B: Green Material: plastic Package Contents: 1 x Timer Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.