Features: 1Counting Down Timer: As time goes by the bright area disappears and the mechanical countdown is very clear to see ideal for timing and reminding. 2For Time Management: With this wind up timer you can better cultivate a correct sense of time for time management improving the working efficiency. 3Wider Range Utility: Allows for wide application in a variety of occasion including but not limited to classroom office kitchen gym and so on. 4Flexible in Placing: Back magnet enables free placing on blackboard refrigerator oven cabinet etc. While the folded back bracket ensures easy use. 5Important Using Tip: To activate the timer before each use turn the control knob clockwise to the 55 minute position and then counterclockwise to the preferred time. Specification: Item Type: Wind Up TimerMaterial: Stainless steel magnet. Weight: 154 g / 5.43 oz(approx.) Package List: 1 xWind Up Timer