Digital Countdown Magnetic Egg Timer for Cooking

One key operation, no more struggling to set a timer with small buttons, just rotate to set time. 3 levels alarm sound mode,can be silence ,normal,or up to 90db. With magent on the back , you can stick to classroom whiteboard , cooker, task, students tablet, iron wall, fridge, sports gym or other steel place. help students focus on study. Large screen with Constant Bright Function. The constant bright digits make it easy to read at a long distance.