Large screen display: the same screen displays 12-hour/24-hour clock, month, day, week and timing-time, which is clear at a-glance. The back is equipped with stand, which can be-attached to the metal-surface and placed on the desktops, free placement and easy operation. Powered-by two CR2032-button batteries (not included), the power-supply is easy to replace. The 9999-day countdown has an ultra-long countdown-time. The screen can be locked to meet the needs of different people. Applicable scenarios: kitchen baking countdown, learning countdown, scientific experiment countdown, anniversary countdown, such-as Christmas, birthday, wedding anniversary, graduation, etc.