La Crosse Technology WT-3122J 12-1/2-Inch Atomic Analog Clock, Natural Wood For precise time in the home or office, 12-1/2-inch atomic analog clock from La Crosse Technology Natural wood frame; flat lens covers clock face from dust and debris Daily resets via radio transmissions to US Atomic Clock in Colorado; 4 time zone setting buttons on reverse Manual setting option for outside continental US and non-DST regions; requires separate purchase of 1 AA battery Measures 12-1/2 inches in diameter with a 2-inch depth; limited 1-year warranty