Have carried my days around for over half a year now. Chose carefully - wanted pulse measurement that measures through the bracelet. My training has clearly become more interesting.
Simple, syncs well with my PC and my Samsung S5. Battery-disastrous 4-5 days. Measuring a little too few steps when I run, but right at the usual walk. Pulse measurement works well, however. Approximately 5-10% too low at high pulse and 5-10% for very low pulse. With this technology, one should not ask for better - for me it is good enough to be able to see trends. Vibrates for incoming text messages and phone calls. Think it's fine with all the auto-detection of physical activity and sleep. Just sleep, I think is really interesting and sometimes explains why you're tired - sometimes you think you actually sleep more than you do.
I actually like the app and compete against several friends in the number of steps on the weekends.
Remarkable cable for charging, but works fine, extra cable is of course to buy on ebay for a few bucks. Unfortunately, not waterproof. Easily Scratched display. The quality of the bracelet and the bracket around the display are perhaps half a year, then you go back to elgiganten and so they change it with a new one - known manufacturing defects but then they want the cable and dongle as well.
In summary, plus the ease and minus for build quality.