YYGIFT Four Event Kitchen Timer Alarm Plan Prep Large Interval Magnetic Kitchen Timer with Whiteboard - White It is easy to use,includes timer, white board and dry-erase pen for timer notes. Times up to 4 group events at the same time in one viewable screen. Each event times up to 23 hours,59 minutes and counts up or counts down. Size of LCD screen:44*55mm. Battery: 2 x AAA batteries(Not Included).