Be sure to write down the exact model number for the PFD you have, I had mine go off a couple of years ago. We were fishing Watts Bar in March and it was coooooold. We ran way down river and when I went to take off my insulated coveralls I heard this whistling noise, my partner started laughing and then I realized I had pulled the manual release cord by mistake, I looked like the Pillsbury Dough Boy by the time it had filled up. I went to Bass Pro and I knew the Brand but not the model and I bought the wrong rearm kit, had to go back and get the correct rearm kit. Sorry I don't have a picture of the unit going off to share, I am sure it was a funny site.
