Sempre (Maple Burl )
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Sempre (Maple Burl ) Overview
The Sempre watch winder is the first and only watch winding device that will keep virtually any hand-wound mechanical watch (with an accessible crown) fully wound when unworn. This patented design is truly unique in that it replicates the human action of finger winding a watch by rotating the winding crown similarly in a clockwise direction. The Sempre design substitutes a mechanical finger arrangement, called a "collet", which grasps the watch's crown securely and rotates it. Several different size collets are provided to fit any watch crown diameter from 3 to 9 millimeters. These collets are custom made of acetal plastic to prevent scratching or marring of polished watchcase surfaces. The collet is mounted in a rotating tubular drive shaft, supported by low-torque precision ball bearings. It is powered by a miniature servomotor coupled to techno-polymer drive gear system fitted with a safety slip clutch. The collet is opened by pushing a spring-loaded plunger at the opposite end of the drive shaft. Releasing the plunger closes the collet, clamping it on the watch crown. The winder is housed in an elegant case with an plate glass viewing panel. The case is provided with a solid brass, gold-plated lock whose fold-up latch also serves as a lifting handle. All hardware is also solid brass, with all exposed parts gold-plated and lacquered for durability. An extension kit is also supplied for use with pocket watches up to 60mm diameter. Shipping Delivery Note: Sempre winders are usually assembled after an order is placed. As a result, shipment of your winder may be delayed up to two weeks.
