La Crosse Technology WT-3181P 18 Inch Indoor/Outdoor Thermometer & Hygrometer Metal Wall Clock, Pewter Automatically Sets to Exact Time Accurate to the Second Automatically Updates for Daylight Saving Time (On/Off Option) Analog Temperature (F/C) and Hygrometer (%RH) Simple Operation: Insert 1 AA Alkaline Battery (not included) or ADD 2 additional AA to extend battery life (up to 3 yrs) 4 Time Zone Settings: PT, MT, CT, and ET