La Crosse Technology WS-8117U-IT-AL Atomic Wall Clock with Indoor/Outdoor Temperature Wirelessly monitors indoor/outdoor temperature 12 moon Phase icons Atomic Time & date. Transmission range: Up to 330 Feet . Outdoor temperature range: -39.8F to 139.8 F (-39.8C to 59.8 C) Automatically updates for daylight savings Perpetual calendar Brushed-aluminum atomic wall clock with time, date, and temperature functions Radio-calibrated for accuracy to within 1 second; automatic self-adjustment Indoor and remote temperatures, moon phase readings, and alarm with snooze 12- or 24-hour clock modes; time zone setting; remote transmission up to 330 feet 12-1/4 by 8 by 1-1/4 inches; takes 4 AA batteries; wall-mount or tabletop; 1-year warranty