i need help with the H557 model...i just put in a new battery but i cant set the digital displays...i dont know if it has a 3 position dial....ive tried pulling the stem out to the so called 2nd stop but i dont get a responce as it says in the h556 and h558..any suggestion..also would a lose battery stop me from changing the digital display..i noticed it went blank and then it came back on blinked a couple of times and then went to the wrong time and date again...help......thanks