The accuracy and special construction of Spring Drive make it uniquely suited for space and resistant to temperature and pressure changes. In fact, the movement has passed the rigorous testing required for space travel and maintained its accuracy and functionality while on board the International Space Station. Inspired by the theme of space travel, U.S. Special Editions reflect motifs based on the moon, earth, and other heavenly bodies. SNR051 features an intricate gray patterned dial representative of the silvered lunar surface and a multi-tone gray sapphire GMT bezel reflective of the light and shadows of space, while SNR053 showcases a dramatic black to green gradation evoking the darkness of space illuminated by the green aurora affect visible around the earth’s polar regions. The newest creation SNR055, echoes the boundary of earth and space and the halo effect created by the sun setting behind the earth, while vibrant blue colors fade to gray. All are accented by a vibrant GMT hand which easily tracks a second time zone at a glance.