- The display is normally off to conserve power (good), but the button to turn on or scroll through displays is in kind of an awkward position for a righty - left side of the face (annoying).
- No "rash" issues like has been in the news, and I wear mine at night as I'm curious about sleep quality.
- With respect to the sleep tracking - Disturbances seem to largely track how I "feel" about my sleep quality day to day. Not really useful other than as a curiosity though.
- HR monitor aspect is nice. Tracks very well with the other monitors.
- Does a great job estimating calorie burn using the exercise logger that you start by holding the button. Self-generated numbers track most closely with walking or running calculators, but tracks closely with the C2 calorie tracker too when I check it. Works for me as an "idea" of where I am at each day.
- Battery only lasts 3-4 days, but recharges in about an hour - usually when I am sitting on my ass in the evening.
- I don't use the BT link to my cell. Can't since I work where I can't have either the tracker or my phone during the day. C'est la vie.
- Has the ability via the dashboard to track calories in/out once you enter what you've eaten. I used it a little, and the database is pretty good.
- Looks are fine. Width is about the same as a normal watch band. I have the black one, which works for me.
Shape would of course want the purple.
