Sharp Digital Alarm Clock SPC486A with Countdown Timer, Alarm Time Display, Calendar Display, & Indoor Temperature Digital Alarm Clock by Sharp is battery powered, so your alarm still goes off if the power fails! Current Indoor Temperature is displayed in your choice of Celcius or Farenheit degrees. Calendar Display shows the Month, Date, and Day (i.e.; 12/25/WE). Current Time is displayed in your choice of 12 hours (Civilian) or 24 hours (Military). Easily verify the alarm time you have set by looking at the Alarm Time Display. Also includes a Snooze Button, Light Button, Countdown Timer and Instructions.