Countdown Clock boasts a quality long-setting timer – up to 999 days, 23 hours, 59 minutes, and 59 seconds. An easy-to-read LCD display ensures a clear view of days, hours, minutes, and seconds remaining. Setting the clock takes less than a minute. Plus, two button cell batteries are included for long-lasting power. Reusable, this clock is ideal for retirement, wedding, baby due date, vacation, and cruise countdowns. Enjoy it over and over!