The Infinity Instruments Clarion is an indoor/outdoor wall clock that successfully combines form and function. This outdoor weather clock can perform under the most adverse conditions. The blue tile frame surrounds the white clock face, which measures 17.50 diam. x 2.75D inches and includes a thermometer and hygrometer for measuring temperature and humidity. It features black colored hour and minute hands that point to large black easy-to-read Arabic numerals. The Clarion uses advanced quartz movement that requires a single AA battery (not included). It maintains precise accuracy for today's busy lifestyles. Infinity Instruments guarantees the quality craftsmanship of all of its clocks, and backs each one with a full 1-year warranty.