Display the time elapsed from your anniversary with the Tenbrink & Co. Anniversary Clock Collection. To add your special date to the Anniversary Clock, start by entering the current date and time. Then add the anniversary date and time. The Anniversary Clock also has an SD card slot, allowing it to play your song on the date of your anniversary. In fact, the clock will play your song up to three times on the day. Likewise, you can press the button to play music whenever you like. Additionally, each face will set showing the years, month, days, hours, minutes and seconds since your special day. The clock even features a complex algorithm that takes leap years and month variations into account. Furthermore, the bottom clock doubles as a day-to-day clock. The Anniversary Clock also comes with a customizable plaque, which sits on the real wood base.