Countdown or up in days, max count up to 10000 days! Count with hours minutes seconds and you can define the way it counts! High precise time chip, only 2-3 minutes tolerance per year; Aluminum case, black painting, 1.2mm aluminum extrusion. very easy and convenient to operate. Ultra brightness, red color. Very low power consumption. 6VDC work voltage. This days countdown clock can provide you a very long time countdown. The max count days is 10000 days(9999 days 23 hours 59 minutes 59 seconds)! You can use it to countdown a long term events, retirement days countdown, etc. The digit character is 1.8" high, the overall size is 53x10x4cm and the weight is 1.06kg(2.33lbs). Very affordable compared to other types long term digital days countdown clock. It works under 6VDC, the power adapter is 100v-240vac input and 6VDC output. Low power consumption. The control distance is around 5-8 meters, this is pretty helpful especially when the clock is mounted out of reach.