User-friendly and intelligent battery saving: single rotary knob operation. Silver knob and black housing. Turn the knob to set the time and press ⊙ to start or stop. The digital light turns off within 5 seconds and switches off after another 5 seconds, which benefits battery life. Magnetic Time Management: With the magnetic back, you can stick it to a classroom whiteboard, stove, worktop, student tablet, iron wall, refrigerator, gym, or other steel surface. It helps students focus on their studies, time management during showers, games, etc., teacher organization in the classroom, and mothers while cooking, baking, and boiling eggs. It also helps people with autism and ADHD to ease transitions and encourages independence and productivity for everyone. Large LED screen: The large, bright numbers make it easy to read, even from a distance. Even in large meeting rooms, classrooms, large kitchens, or gyms. Loud alarm and flashing digits: 3 alarm levels: silent, normal, or up to 90 dB. Does not beep unnecessarily while setting the timer. Flashing LED digits remind you when the time has come in silent mode. Note: The timer runs on 3 AAA batteries (not included).