The Marathon 41mm Green Pilot Navigator Quartz WW194001SG was designed with both pilots and adventurers in mind. It's an amazingly cool piece with the asymmetrical design and a bi-directional bezel. The 41mm diameter case with 48mm lug to lug distance has a very nice wrist presence, not too big, but definitely not too small. And where the watch especially will not let you down is under extreme circumstances, with the The lightweight Fibreshell case,60 meter water resistance and sapphire glass. And the star of the show is the amazing tritium lume, which has the benefit of not needing to be charged and it will function at all times. Under the hood is a reliable, Swiss Made, ETA High-Torque FØ6 quartz movement and the watch is fitted to a heavy duty nylon strap, that is both great in comfort and in looks! The full model number of this watch is: WW194001SG-0810.