North Edge Apache Men's Outdoor Sport Digital Wrist Watch Multifunctional Smart Watch Swimming Military Army Watches Altimeter Barometer Compass Waterproof 50m

. This APACHE watch is using CR2032 battery, no need to charge, but to conserve battery life , the backlight will not very bright, but enouhg for time reading the dark . . Functions: altimeter, barometer, Thermometer, air pressure trend and altitude trend and altitude trend;EL backlight . Professional watch suitable for swimming, running, etc. . due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. . SIZE: the diameter of watchcase is : 2.04 inch , the net weight of watch is 4.37 oz. this is a big size with a little heavy mens watch ,so please be sure this is suitable for you. thanks