Unique Wall Clock for Any Room: This modern wall clock was designed by Michelle Ivankovic for Umbra and is made with high-quality steel that is gently bent to form the unique multi-ribbon shape Silent Sweeping Quartz Clock Movement: Each ribbon wall clock features a non ticking quartz movement that runs silently and is maintenance free (no winding required) Clear Readability: Ribbon has a 12-inch diameter and contrasting hour and minute hands that ensure easy readability in any size room. Mounting hardware included Tested for Quality Assurance: Ribbon's battery-operated design uses a single aa battery (not included) and all Umbra clocks are tested to ensure accurate time keeping