Wireless outdoor temperature (F or C) with trend arrow. Atomic time and date with manual setting. Automatically updates for daylight saving time (On and Off option). Time display (hour and minute). Perpetual calendar (month, date and weekday). Time alarm with snooze. Wall hanging or free standing. Low battery icon for clock and sensor. Clock measures 11 in L x 1.1 in W x 8.54 in H. Sensor measures 2-1/2 in L x 1.42 in W x 3.98 in H.