I have gmw 5610 in very good condition for sale. It only has minor wear marks on the strap and caseback and is fully functional. Please note that this watch has be hydro modded, which means that the watch is filled with silicon oil. The main advantage of hydro modding is greatly improved contrast, which is significant for a non-STN negative display. I can say that it is nearly on par with my positive STN model. Unfortunately, the filling process wasn't perfect and there are some bubbles (see pictures). That's why I am letting this go for cheap. Since I used 10 CST silicon oil, the auto-light feature still works. The rubber cushion has been removed to prevent it from swelling and causing a leak. I am asking for 60 USD shipped to CONUS, 50 USD local to 61802.