Front face: Timex Expedition Chronograph, Indiglo, WR100M
Rear face: Stainless Steel Back, Battery CR2016, www.timex.com, WR100M, 921 54N (Note: I assume this is the model number), TW4B04300 (Note: I believe this is the serial/batch number)
Watch strap width/size: 20mm
This is my watch, which I couldn't find the strap width of from google (had to watch some man's youtube video to find out), so I'm putting up this information to help others.
Use a knife to pry up the wee tab on the back of the watch, replace CR2016 battery and squeeze back back on. See below images for reference
While you're here, why not check out the rest of my Neocities site?