1) Water resistant (proof) -- I sweat more than anybody I know when I work out. I've used these on the treadmill, on trail runs, and long runs. I imagine I've put as much or more sweat on these than anyone else, and they have worked flawlessly. The only issue I've had is sweat residue has caused them to not seat correctly in the charging case, which prevented them from charging; however, after wiping them down with a Clorox wipe, they were fine. I've used Jaybirds, Kiquers, and several other bluetooth headsets, and my sweat ruins them within a few weeks, if not less. The Airpods have performed better than expected.

2) Ecosystem -- If you have another apple product you're using them with, the seamlessness is awesome. I can be listening to a podcast, take one out of my ear, and the podcast pauses. As soon as I put it back in, the podcast resumes. I am tempted to get the Apple Watch 3 to be able to not use my phone at all.

3) Charging quickness -- they charge very quickly.

My only complaints are battery life compared to other bluetooth (I think it's a couple of hours--I've never actually used them to battery exhaustion), and easy to lose. They do have findmyiphone capability, but they have to be connected to the phone to play a sound.