Long setting countdown time: 999 days, 23 hours, 59 minutes and 59 seconds.<br> Upgraded version: bigger size. LCD screen size:13.8cmx4cm/5.4x1.6in.<br> It will alarm for sixty seconds when arriving at your setting number.<br> With clock function. You can switch between 12 and 24 hours systems.<br> Easy to set.<br> Two ways to place it. With back and movable bracket.<br> Wide application: vocation, wedding, new , retirement, meeting, study, and so on.<br> How to set clock:<br> Hold the CLOCK button see the clock number 'hour' start flashing.<br> Press UP/START or DOWN to adjust that particular number.<br> Keep hitting CLOCK to set minutes - seconds.<br> Press CLOCK again to start.<br> In the CLOCK mode, press the DOWN button to switch between 12 and 24 hours systems.<br> How to set countdown time:<br> Hold the SET button see a number start flashing.<br> Push the SET button get to the number you want to change.<br> Press UP/START or DOWN to adjust that particular number. /START or DOWN, the number will change quickly.<br> Keep hitting SET until the screen stops flashing.<br> Press the UP/START button to start or pause the counting down.<br> Press and hold the UP/START and DOWN buttons at the same time to reset to 0.<br> Requires: Internal 2 x CR2032 batteries (Included)<br> Colour: black<br> Material: ABS<br> Size: about 15.5x5.7x1.1cm<br> Package Contents:<br> 1 * Digital timer clock<br> Only the above package content, other products are not included.<br> Note: Light 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.