Features Easy to use, smart and energy-saving: simple to operate the silver knob and black body, just turn the knob to set the time, press to start or stop. The digital light will dim after 5 seconds, and then turn off after another 5 seconds to extend battery life. Magnetism: There is magnetism on the back, you can stick it on classroom whiteboards, cooking utensils, tasks, student tablets, iron walls, refrigerators, gymnasiums or other steel places.Time management helps students focus on time management for study, showering, games, etc., classroom teacher organization, mother cooking, baking, and boiling eggs. Large LED display, constant brightness function: 3-inch large screen, constant brightness function. Constantly bright numbers make it easy to read from a distance. Even in large conference rooms, classrooms or large kitchens, gyms. Loud alarm and digital flashing function: 3-level alarm sound mode, which can be silent, normal or up to 90db. No unnecessary beeps will be emitted when the timer is set. You can hear this alarm in another room, so you dont have to worry about overcooking. In silent mode, the flashing LED number will remind you when the time is up. Specifications: Material:Plastic Size: Approx. 7.9x2.65 cm/3.11x1.04 inches Note: 1.Please allow 0-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3.If the product spring is too concave, it needs to be equipped with a longer battery carbon pack for normal use. 4.Other parts are not included.Thanks for your understanding. Package Includes:1 x Digital Kitchen TimerWithout Battery