Precision and Convenience Careful Protection of the Crown Keeps Exact time The Manual automatic watch winder helps you to keeps Exact time at all times. being on time is the first step to a successful life, enjoy the wonderful life that an automatic watch can bring you. Careful Protection of the Crown The end of the Manual automatic watch winder is made of specialized materials and improved workmanship to minimize wear and tear on the crown. The excellent feel prevents the risk of over-winding. Quick and Easy Operation With a wide range of sizes to choose from, the Manual automatic watch winder will always provide you with the most precise and convenient operation. Provide your automatic watch with enough power in less time and save time with easy winding.