[ Track up to 1999 Days ] - This AIMILAR countdown timer clock features a long-term setting of up to 1999 days, ideal for multi-year projects, lab experiments, retirement plans, and milestone celebrations. [ One-Touch Backlight ] - Simply press any button to illuminate the display for easy reading in low light conditions. Auto-off after 5 seconds without wasting battery. [ Triple Time Tracking (Start/End Dates + Countdown Days) ] - This AIMILAR countdown clock displays the end time, start time, and countdown time simultaneously, ensuring you have all the information you need at a glance. [ Auto-Calculating Countdown ] - It automatically calculates intervalsl (between starting time and ending time) , no manual math needed for project deadlines, experiments, or loan terms. Auto-switch to count-up mode if start > end. [ Alarm clock function ] - With a programmable alarm that can be turned on or off, the AIMILAR countdown timer clock keeps you on track, alerting you when it's time to take action. Switchable between 12/24-hour format to suit personal habits and scenarios. [ Customizable Theme Cards ] - Includes 4 preset and 2 blank cards. Design your own cards for any occasion - be it retirement, Ramadan, or a vacation countdown - making it a unique gift for yourself or loved ones. Embrace the excitement of anticipation with the AIMILAR Countdown Clock. This AIMILAR Countdown Timer Clock simplifies long-term time tracking with a 1999-day countdown. Its triple-time display shows start, end, and remaining days at a glance, while auto-calculation removes manual math. One-touch backlight ensures easy reading anytime, and customizable theme cards add a personal touch. Key Features: 1999-day countdown for long projects One-touch backlight with auto-off Triple time display (Start/End Dates + Countdown Days) Auto-calculating countdown Alarm clock function 4 preset + 2 blank theme cards Ideal for: ✔️ Professionals: Managing long-term projects, tracking experiment durations in labs. ✔️ Couples: Counting down to weddings, anniversaries, or dream vacations. ✔️ Individuals: Planning retirement, monitoring pregnancy progress, or preparing for significant exams. ✔️ Educators: Marking classroom milestones or project deadlines.