Timex Men's Watch Waterbury GMT Blue Dial Brown Leather Strap Date TW2U90500VQ ASIN B0CB77Y9W2 battery operating time: 7 months battery operating time: 7 months on rechargeable battery (operation period with normal use without exposure to light after charge) and 18 months on rechargeable battery (operation period when stored in total darkness with the power save function on after full charge) Technomarine TM 719026 also features a 12 24 hour time and day date display functions This watch measures 39mm across and 12mm thick dot and index hour markers and white accents gold tone luminous pencil shaped hands for superior readability