HITO? 10-Inch Silent Non-ticking Wall Clock w/ Temperature and Humidity Display Classic and elegant non-ticking wall clock, mainly made from ABS. Large numbers guarantee good view. Super-quality Quartz Sweep Movement guarantees accurate time and absolutely silent environment; Average battery can last about 6 months. Powered by one AA battery (not included). Please use average carbon battery, instead of high duty batteries. Back nail slot offers easy installation.