Features: 1MAGNETIC: This mechanical clock timer has a strong magnetic backing that is perfect for placing on refrigerators ovens utility cabinets classroom whiteboards and more. 2EASY TO USE: To activate the timer before each use turn the control knob clockwise to the 55 minute position and then counterclockwise to the desired time to complete the setting. 3TIME MANAGEMEN: Perfect for improving time management and increasing work efficiency. Such as taking exams managing games and bedtime setting timeouts and making sure you brush your teeth long enough. 4CONVENIENT: Countdown timer can help with special needs. The brightly colored disc disappears in a design that helps simplify transitions and helps children visualize the passage of time. 5MULTIPLE APPLICATIONS: Mechanical countdown timer with high accuracy for school classroom office work kitchen cooking gym fitness and more. Battery free and durable. Specification: Item Type: Mechanical Countdown TimerMaterial: Stainless Steel MagnetsGross Weight: Approx. 154g/5.4oz Package List: 1 xMechanical Countdown Timer1 xInstructionManual