Our consumer electronics products include radio-controlled clocks and watches wireless weather stations power monitors and other measuring devices. We introduced radio-controlled clocks to the US market in 1991 and continue to be on the cutting edge of this technology in America. Our weather instruments clocks and watches are calibrated daily to the atomic time standard of the National Institute of Standards and Technology. . Atomic time and date with manual setting. World Time. Automatically sets to exact time. Accurate to the second. Indoor temperature (°F). LCD display. Automatically updates for daylight saving time (on/off option). 4 time zone settings. Simple operation: insert 2 AA alkaline batteries. 12 Diameter. Four Time Zone Settings. Daylight Saving Time Option On/Off. Manual Reset Button. Indoor temperature range: 14.2°F to 103.8°F. Clock: 2 AA Alkaline Batteries. Color: White. Dimensions: 12 Dia.