I take it you aren't interested in sleep tracking? I find it helpful to know how much "deep" sleep I've gotten -- and it does tend to correlate with how I feel the next day.

But as long as it lasts for more than a day, and if it charges fast enough, you could always charge it in the car on the way to work. Or charge it while in morning while in the shower.

I've never tried using my Apple Watch 2 for sleep tracking as it's usually only around 50-60% at the end of the day, and it's 'best' to charge at night. Granted, I'm already wearing a Fitbit Charge HR and have a Hello Sense sleep tracker as well.

I've also noticed on the odd occasion where i sleep with my apple watch on, the screen lights up too frequently as i roll over. The fitbit does that too, but isn't as bright.

Anyway, if you can barely/hopefully survive 2 days with it, it means you really need to charge it daily. Again, something I'd rather do while sleeping than at my desk.

I know people who use the Apple Watch for that. The battery is small enough that they let it barge twice a day (when getting ready in the morning, some time in the evening) that it tops up to 100% in a short amount of time.

Being a sysadmin having the thing on my wrist overnight is the best use case for me to have it, that way if I get alerts in the night I can have it vibrate so I don't wake the wife.

In all likelihood I would charge it at work, not at home. But I get what you're saying, that's interesting.

Sleep tracking is one of the features that pebble users fawn over. Charging overnight prevents that use case.

It doesn't actually need to charge overnight.

You can get by with wearing an apple watch while you sleep. It charges mostly to full in about the time it takes for a morning shower.

I want to use a watch with sleep tracking, obviously I can't do that if I'm taking it off every night to charge it.

People do use them for sleep tracking. Take it off a half hour before bed, charge it. Put it back on the charger in the morning for a while, and it's good to go.

I charge my FitBit Blaze when I'm showering and getting ready in the morning and that's enough to get it back to 100% each morning.

Same with the Apple watch.