[. . . ] [. . . ] Battery Replacement: Follow the instructions below to change the battery in your Triax S27 watch. 1 Unscrew battery hatch with a coin by turning counter-clockwise. 2 Remove old battery and dispose properly. 3 Insert new battery into cavity with writing facing you. 4 Replace battery hatch. Turn clockwise until hatch is tightly secured. 5 Press and hold all four buttons for 3 seconds to restart watch. [. . . ] [. . . ]