Disadvantages - continuation of merits.
1. Design (round - it is optimal for "watch functions", for "smart" ones - rectangular is really more convenient).
2. Some of the installed dials from the application store are really beautiful and convenient, but picking them out of the mass of the same type is another task (however, this is more of a nitpick than a drawback).
3. Sometimes the hand under the strap sweats. Here they complained about the non-wear resistance of the case or glass - so far (pah-pah) everything is fine with me.
4. AUTONOMY - the most serious drawback. Gentlemen, when will you begin to do not one-day?
In addition, I basically imagined what to expect from the device and charging every other day didn’t scare me (although a week would be oh, how not superfluous), but for a couple of months now I’ve been stubbornly fighting with watches (and with Samsung) in order to squeeze out at least would these miserable 2 days. Moreover, the problem is not in the watch itself (without a connection with the phone - and sometimes even with it! - they pull it out), but in unoptimized applications that are periodically attacked by non-stop "zhor" - and the lack of competent support for such cases.
5. The mechanism for changing straps is not very convenient (it’s more interesting for apple makers), there are fewer of their varieties themselves (again, than with apple; though the prices are much more noticeable there), and they are much less common (in most salons - only on pre-order, which not very convenient; for example, when buying, I was lucky to come across a salon with different samples and, based on the results of the fitting, I took the wrong one that I was oriented at first).
6. All communicators (sms, whatsap, telegram, mail-agent) are inferior: you can only read the incoming message and give a short answer from the blanks: neither write "from scratch" nor look at the archive - nothing . For the second decade of the XXI century this is an obvious slip. The fitness functions are rather goofy (it feels like they were made solely for "losing weight", and not for normal monitoring of physical activity).