Long setting countdown time: 999 days, 23 hours, 59 minutes and 59 seconds. With clock function. Switchable between 12 and 24-hour format. Easy to set. Two placement options: magnetic back and adjustable bracket. Wide application: suitable for vacation, wedding, new baby, retirement, meeting, study, and more. Net weight: 107g Product dimensions: 156 x 57.5 x 13mm Screen size: 138.4 x 39.9mm Powered by two CR2032 button batteries Countdown function: displays days, hours, minutes, and seconds; maximum countdown duration: 999 days, 23 hours, 59 minutes and 59 seconds Clock function: displays hours, minutes, and seconds; supports 12/24-hour format Equipped with magnet and bracket on the back for metal surface attachment or desktop placement Ideal for use in sports events, college entrance exams, important schedules, and other countdown scenarios Color: black Package includes: 1 x timer