Ronda watch movements are very efficient and precise when keeping time. The Ronda watch movements we sell have acquired a reliable and dependable reputation over time. Many Ronda watch movements are used in today's contemporary popular watches and can be used to retrofit many popular discontinued model watches that are unavailable today. All Ronda watch movements come with a winding stem, hour wheel, and single corresponding watch battery. All watch movements are brand new and quality control tested for reliable and efficient functioning.