Fossil Blue GMT FS5990 Data WatchColour yellow WR50 5bar water resistance WR50 5bar water resistance battery operating time: *7 months on rechargeable battery (operation period with normal use without exposure to light after charge) *18 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge) Accuracy: ±15 seconds per month (with no mobile link function) Date month display swapping Day display (days of the week selectable in six languages) Regular timekeeping GMT Movement 46mm Case Size Stainless Steel Case and Bracelet Mineral Crystal 100 Meters Water Resistant