To change the battery on a Timex watch, open the battery holding panel on the back of the Timex watch. Remove the old battery, insert the new battery, and place the holding panel back onto the watch.Continue Reading
Find the four screws on the back holding panel. Unscrew them with a jeweler's or eyeglass screwdriver.
Slide the flat end of a screwdriver between the panel and the watch. Pry gently to push the holding panel off the back of the Timex.
Pick up the Timex, and flip it over to drop the old battery out of the housing. Drop the old battery into a cup or hand when flipping the Timex over.
Place the Timex on a flat surface, and put the new battery into the housing. Push down to snap the battery into place.
Place the panel onto the Timex. Add a screw to each hole, and align the holes on the back of the Timex. Turn each screw using the screwdriver until the screw is tight in its housing. Tighten each screw one more half-turn to lock the holding panel into position.