1-59 minute countdown function, 3 minute chord prompt, to avoid forgetting to leave food in the oven or microwave oven for several days or forget to turn off the fire. The adjustment range is 1-59 minutes. The countdown will start after 3 seconds. The countdown will end, the screen will flash and the bell will ring for 3 minutes. The screen display can be awakened by voice control, tapping, shaking, etc. When the sound is detected, the screen lights up, and the display will be automatically closed after 35 seconds. Two different sets of alarms can be set every day, and the two things do not interfere with each other. The two temperature display modes can be switched freely. It can be powered by dry battery or USB. The product has strong magnetism, which can be adsorbed on the refrigerator or iron parts, and can also be placed on the desktop for convenient timing and viewing.