I replaced the battery in my under armour watch and now it blinks random stuff like it needs to be reset. how do i do that?

Try taking the battery out for a couple of minutes. That may reset the watch. It may also be a bad battery so replace it while it's out.

No matter what I do or however long I hold A the time will not change please help me

Hello,

I researched your watch online and on my initial search, I didn't find the instructions for your watch, however, you may wish to send the manufacturer a note requesting the instructions. Below is their email address.

[email protected]

I hope that helps and that you enjoy your watch.

--Sandy

I had the exact same problem with my watch, it wouldn't stop beeping or flashing and the reset would not work. I fixed the problem an hour ago by replacing the battery in the watch.
hope this helps!!

No is look like a problem.You have the doing the reset after the batery change?

Not a malfunction - just a dead battery. See the manual:
http://www.victorinox.com/medias/sys_master/timepieces_manuals/8800396705822/NightVision_II_ENGLISH.pdf

AC point is not located under the battery. It is at the edge of movement. Get an eyeglass with good magnification and you will find it.
Rate me, please.

No, you do NOT need a spec tool. All you have to do is to reassemble watch strap completely(with all the bits and pieces, insl. wings, armour,etc).

Go on line under the watch name like www.bulova.com, there you can click on the service center and download instructions there once you find your particular watch brand.

This reset trick works with other Casio Alarm Chrono digital watches, such as my old Model W-720, similar to your F91-W. After the new lithium coil cell is installed and secured with the spring clip, the watch may show random segments in the LCD display or may simply be blank. Insert a sewing needle, paper clip, or blade of a small jeweler's screwdriver into the hole on the back of the movement stamped "AC" (All Clear) to momentarily connect the gold plated contact at the bottom of the hole to the stainless steel battery clip. The battery clip in most such Casio watches is connected to the "+" terminal of the coin cell. This will reset the CMOS chip and it should start up with the watch displaying 12:00 and the date at 1-1. Then, use the control buttons to set the time and date in the normal fashion.