4-inch Large Digital Numbers with Continuous Bright Function make it easy to read at a long distance, even in the big meeting room, classroom, big kitchen, or exercise room. 4 keys classic design, So simple that elderly grandma and 5-year-old kids can use it easily. 99-minutes countdown timer with magnetic back to stay on task, tablet, iron wall, assists with organization and concentration. 3 levels of alarm sound mode, can be quiet, normal, or up to 90db. Does not beep unnecessarily when making a timer setting. Can hear this alarm in another room, no more worry about overcooking.