hello, goodday... I have mg Casio G Shock Gravitymaster GRB100, which I have bought from true Casio retailer. I have it for 2 months, till when I was driving, it was directly facing the sunlight, and when I have check the time, it has moist on it. It happened for almost 2 times, it has moist when get under the sun. I didn't even used it for swimming nor while taking bath, it only got wet when I wash my face, but not totally just a little splash. what do you think? should I take it back on the store where I bought it? thanks for your opinions.