The L73859 Two-Tone Atomic Clock was developed with the head chef, lead decorator, or CEO of your home in mind. A gentle reminder of your top brass status, this digital clock is the ultimate in style, function, and convenience wherever you decide to hang or place it. With its Atomic Time precision, built-in calendar, and indoor and outdoor temperature readings, you'll always have accurate, easy-to-read information to go on. Plus, when timing is of the essence, you can stay on track with the countdown timer. This time, it's an easy executive decision. It has a weather resistant casing, long 330 ft range, and detects readings down to -40°F below. The sensor transmits ambient air temperature and provides your clock with an accurate current outdoor reading. With added features, La Crosse Technology’s L73859 Atomic Digital clock observes low battery power, activated snooze alarm, active timer, and transmitting sensor signal strength. Completely battery operated, so allows for versatility!