Long setting countdown time: 999 days, 23 hours, 59 minutes and 59 seconds. With clock function. Switchable between 12-hour and 24-hour formats. Easy to set. Two placement options: magnetic back and adjustable bracket. Wide application: suitable for vacations, weddings, new baby arrivals, retirement, meetings, study sessions, and more. Net weight: 107g Product dimensions: 156 x 57.5 x 13mm Screen size: 138.4 x 39.9mm Power source: two CR2032 button batteries Countdown function: displays days, hours, minutes, and seconds; maximum countdown duration of 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 attachment to metal surfaces or desktop placement Ideal for use in sports events, exam preparation, important schedules, and other countdown scenarios Color: black Package includes: 1 x timer