MWC make several variants of this watch with slightly varying specifications to meet the specific requirements of a variety of clients. This variant has a sophisticated hybrid movement combining the characteristics of an automatic watch such as sweep second hand with the benefits of a highly accurate quartz movement. The watch also has a hacking feature for synchronization or to enable you to stop the watch running and conserve power if it won't be used for an extended period. The MWC hybrid pocket watches essentially combine the best of new and traditional watchmaking technology. They encompass features from both our conventional automatic and quartz watches resulting in a hybrid ultra-low maintenance movement. The hybrid movement has a battery powering the movement through coils and a quartz oscillator, but the hands are mechanically actuated and controlled. Essentially the movement is mechanical except it's powered by a battery and regulated by a crystal the only thing it doesn't have is a spring but in terms of feel and outward appearance it looks the same as it’s mechanical sister models. SPECIFICATION Diameter: 47.5mm Length with crown: 58mm Thickness: 14mm Crystal Width: 40mm Crystal Type: Domed Glass Case Material: Stainless Steel Caseback: Stainless Steel Luminosity: Luminova Movement: Hybrid (Mechanical/Quartz) Accuracy: 15 seconds per month Complete with chain The Watch is delivered in its original box and has a 2-year factory guarantee