back in January i lost my pokewalker while walking...yesterday I found my Pokewalker 10ft from my front door sheltered by a Cinderblock in my neighbor's yard. I brought it inside, let it air dry as the instructions said, then replaced the battery...and behold, the thing came back to life.

it survived subzero temperatures, 4 major snowstorms and a massive ice storm and atleast one rainstorm, and STILL WORKS.