RL-HM202 Digital days countdown timer is a simple device to track the special moment time which happened in future.It is easy to begin the countdown tracking to set the current time and target time by buttons.It display the clock time by 12 hours or 24 hours military as your using habit, available adjustable daily alarm clock to remind you the request time.It have white backlight can be adjusted to ON/OFF.It have clear and loud buzzer can be heard all conor of your house. About after-sales: 2 years warranty service, during the warranty period, if there is any quality or logistics problem with the product, please contact customer service for free replacement.