Case material: NA; Charge: Automatic; Conditions: New Presentation condition : With dealer guarantee ; Price on request Gmtbroker Reference: w31001 Orbita Watch Winders & Cases w31001 Complete Details: Totally unique, the Sempre winder is the first and only winder that will keep any mechanical watch fully wound. Precision mechanical fingers grasp the watch crown and wind the watch as you would. Fully adjustable and user-friendly. This watch is also known as w31001