... 2000 to 2099, a total of 100 years.2. Display: time, day, temperature, automatic switching display (optional), 12/24 hour, can ... , built-in button batteries, when power normal travel time.Specifications:The digital clock displays the time very clear. In any small to medium ... Digital Alarm Clock [Product features]1, the large screen display time, it have a variety of colors, patterns for your choice2 ...