Orient Watch's sporty mechanical collection has one of the largest ranges of function and technology options in Orient's latest 2009 international collection. Whether you're looking for a semi-skeleton, a racing-inspired design, or alternative materials like carbon fiber, this collection offers several options and additional features from which to choose. As you wear an Orient mechanical watch, the energy from the motion of the watch is stored in a spring, which then powers the mechanical timing device of the watch. In essence, you are the power source, making your watch green technology. The spring will store up to approx. 40 hours of power, and you can easily check power levels using a power reserve indicator. Some watches in this collection have this type of indicator, which is considered a superior function and stresses Orient's wide experience in watchmaking. What makes an Orient watch a truly unique piece is our uncommon commitment to in-house production of mechanical mechanisms. We produce our mechanical mechanisms and assemble our watches with pride from start to finish.