Usage Tips: Features: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 magnetic 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 durable and 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. Specifications:Material: ABS-MaterialFunctions: Timing/ CountdownTime-Range: 9999Days, 23:59 Minutes, 59 SecondsBattery: 2pcs CR2032-Button Battery (not Included)Screen Size: Approx. 100x70x15mm/3.94x2.75x0.59inch Note:Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes:1x Electronic Countdown Timer