DO NOT BUY.
This watch is now End of Life.
Buy any other newer watch (including the SE).
The 90 day warranty does not give me the warm fuzzies about buying this refurbished from woot, however, that’s a part of the reason that the watch is cheaper than buying from Apple; after 90 days you’re on your own for any issues you might have (honestly - with the stories I’ve read in multiple different comment sections when these watches come up for sale I’d just buy direct from Apple - it might be more money but you’ll get a 1 year warranty on the device).
If you buy one of these watches, and if you can, please come back and reply to this comment with the condition of the watch. I’d like to be sure I’m presenting both good and bad cases.
I got a series 4 about 6 months ago, watch was in fine shape, and I put it in a case immediately anyway, because I’m a hazard. Battery lasts about 14hrs, don’t expect to wear it all day and use it for sleep monitoring. The charger is crap and is now held together with scotch tape, but it’s in a stand so it’s not too much of an eyesore.
If you’re comfortable with the 90 day warranty I’d opt for a refurb Series 6 off the mothership, GPS & cellular for $275.