Big Digital Countdown Days Timer Clock - 999 Days Count Down Clock Timer for Graduation Lab Kitchen (Black) Long setting countdown time: 999 days, 23 hours, 59 minutes and 59 seconds._x000D_ Upgraded version: bigger size. LCD screen size:13.8cmx4cm/5.4x1.6in._x000D_ It will alarm for sixty seconds when arriving at your setting number._x000D_ With clock function. You can switch between 12 and 24 hours systems._x000D_ Easy to set._x000D_ _x000D_ Two ways to place it. With magnet back and movable bracket._x000D_ Wide application: vocation, wedding, new baby, retirement, meeting, study, and so on._x000D_ How to set clock:_x000D_ Hold the CLOCK button until you see the clock number "hour" start flashing._x000D_ Press UP/START or DOWN to adjust that particular number._x000D_ Keep hitting CLOCK to set minutes - seconds._x000D_ Press CLOCK again to start._x000D_ In the CLOCK mode, press the DOWN button to switch between 12 and 24 hours systems._x000D_ How to set countdown time:_x000D_ Hold the SET button until you see a number start flashing._x000D_ Push the SET button until you get to the number you want to change._x000D_ Press UP/START or DOWN to adjust that particular number. Hold UP/START or DOWN, the number will change quickly._x000D_ Keep hitting SET until the screen stops flashing._x000D_ Press the UP/START button to start or pause the counting down._x000D_ Press and hold the UP/START and DOWN buttons at the same time to reset to 0._x000D_ Requires: Internal 2 x CR2032 batteries (Included)_x000D_ Colour: black_x000D_ Material: ABS_x000D_ Size: about 15.5x5.7x1.1cm_x000D_ _x000D_ Package Contents:_x000D_ 1 * Digital timer clock_x000D_ _x000D_ Only the above package content, other products are not included._x000D_ Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm. _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_ _x000D_