The manual winding Jaeger LeCoultre calibre 976 movement is rhodium-plated with fausses cotes embellishment. It’s constructed with 19 jewels, a straight-line lever escapement, a monometallic balance, a shock absorber mechanism, and a self-compensating flat balance spring. The case, dial, and movement are all signed French designers Cesar de Trey and Renee-Alfred Chauvot created the innovative Reverso in 1931. The idea was inspired by the desire of polo players to have a wristwatch that could protect the crystal and resist the abuse of the extreme sport. This distinctive art deco reversible design has become a signature icon for the company, and one of the most unique watches in the world.