Chaney / AcuRite. The Timex 5-Year Set & Forget Wall Clock is perfect for home, office or classroom - any place a time reminder is needed. Maintenance free with a 5-year battery life plus Set & Forget technology. Patented Set & Forget technology uses a built-in internal calendar to automatically spring the time forward and fall back for Daylight Saving Time (DST). Clock features Arabic numeral indicators at every hour, minute track and second hand, topped off by a glass lens. One-year limited warranty.