Feature wise this watch is great.
The construction is pretty bad though. I have a fairly thin wrist for a guy, and it was never really comfortable, but despite all it's bulk two of the buttons broke and the watch became unusable within about 3-4 months of use.
This is not abuse, mind you. I was hiking and would use the buttons normally, and their plastic just cracked down the middle. I don't think I ever hit it against a rock or anything.
In short, be gentle and the watch will work well if it fits you.
I wear these boxers for running, hiking and day to day (sometimes).
They are very comfortable, and don't stink when hiking.
One problem is that the little size tag is on the right butt cheek, and if it gets in the wrong orientation it can itch a bit, and this can be a little tricky to fix.
They are also not very durable, but that shouldn't matter for underwear ;-) I went with some friends on a fairly technical hike/climb down a stream, and when we were fording pools of water (and other unidentified liquids) we did this in our underwear. Sliding down some rocks with a 55lb pack made two small holes on the backside, but these haven't grown larger.
The upside is that despite all that funky water they *still* didn't stink.
I have the men's version of this sweater and it's *really* comfortable.
It's warm and well fitting (stretchy but not too much), and it breathes better than a microfleece (though I'm noticeably warmer with it I'm never sweaty, when sitting at home for example).
The neck is a little bit wide for the other sizes but it stands up well. Maybe this doesn't affect the women's version.
It also really looks good - I can actually go out with it if I don't feel like ironing a shirt.