Ambient Weather 18" Indoor/Outdoor Radio Controlled Wall Clock with Temperature & Humidity RC-1800WSTH Enhance your outdoor living space with the 18Atomic wall clock from Ambient Weather The Ambient Weather RC-1800WSTH with second Hand turns an ordinary wall clock into an extraordinary, accurate time piece with the radio controlled time The clock also includes a dial temperature and humidity sensor to monitor your environment under the patio (for utmost accuracy and reliability, place in a shaded, protected Area) The clock automatically synchronizes the time several times a day based on a radio signal from fort Collins, Co (WWVB). the radio controlled clock never needs resetting and is accurate to the second Keep track of the time with the split second accuracy while entertaining on the patio, frolicking in the pool, planting in the garden, or resting in the hammock