Color: white, black Material: stainless steel+ABS+magnet Size: 6 * 6 * 3.5cm Weight: 108g 1. Mechanical countdown timer for cooking, meeting, teaching, playing games, doing homework, etc. Mechanical, no batteries required. 2. Timers have many practical uses to improve time management, increase productivity in daily tasks, etc. Examples include: taking exams, managing game time, bedtime, setting pause times, and making sure teeth brushing is long enough. Excellent tool to help children visually understand the passage of time. Recommended for parents and all teachers, especially special education and K-12 teachers. 3. The Countdown Clock can help those with special needs. As time passes, the red disc disappears. The visual design of this timer helps simplify transitions, encourages independence and increases productivity for people of all abilities. 4. Magnets are built into the bottom, making it suitable for placement on refrigerators, ovens, utility cabinets, and whiteboards. 5. Simply turn the control knob clockwise to unfold the red disk so you can visually see the time countdown. Note: To activate the timer before each use, turn the control knob clockwise to the 55 minute position and then counterclockwise to the desired time. Do not turn counterclockwise directly from the 0 scale; forced rotation will damage the timer.