This Handy timer offers two functions in one compact device. As a clock with 12 or 24 hour setting. And as a four channel Timer that counts up or down independently or simultaneously up to 23 hours 59 minutes and 59 seconds. A distinctive alarm sounds when timer is up to indicate which timer had just finished. It also features a memory recall of the last timer setting. You can display this Timer in three convenient ways by magnet, clip and spring stand. This Timer operates on 2 LR44 Lithium batteries and batteries are included in the package. Care for product; Avoid exposing Timer to extreme temperature , Water or severe shock. Also avoid contact with corrosive material such as alcohol, perfume or cleaning agents.