Chaney / AcuRite 18" Indoor or Outdoor Copper Wall Clock features atomic time and precise, reliable temperature readings. Atomic clock is radio-controlled to maintain the correct time with split-second precision, and automatically adjust itself for daylight saving time (DST). Durable, weather-resistent copper metal construction is suitable for all seasons - indoor or outdoor use. Includes an integrated hang hole for easy wall mounting. One-year limited warranty.