This 18-inch Indoor/outdoor atomic wall clock is all about effortless accuracy and style. We have wrapped up and refined atomic timekeeping in a durable and distinctive antique copper design. Its weather-resistant construction—perfect for the patio or the living room—paired with premium metal hands and a look that deserves high visibility and earns its praise. Its easy-to-use controls and impressive 5-year battery life ensures low maintenance and reliability that only seem standard when it comes from us. It even tells you the temperature and humidity because a clock like this is worth a first, second, and third look.