How to change battery in 20/45914TT GM00 Armitron

SOURCE: How to set an Armitron watch. Can't set the days correctly.

mcdevito75 here, The stem has 2 positions, Carefully slip a fingernail under the stem and lift, it may take a few trys to get used to it, in this first position you should be able to set the DATE very easily and Maybe the DAY of the wwek also, turn the stem 1 way to change the DATE and the other way For the DAY of the week., Let"s figure you can only set the DATE in this first position, First thig to do is set the DAY of the week, go thru the watches 24 hour cycle and set the DAY to 1 DAY before the DAY you need, now in that first position of the stem, set the DATE to 1 DATE before the DATE you need, now in the 2nd position we all know pull the stem out to set the time of day, go thru the 24 hour cycle to bring up the DAY of the week and DATE you need. Now your watch is set and will change on tome at around mid-nite.