If you want to start exercising or that you are already running then this is a good activity band to keep a little track of the situation, so to speak. You take the stairs a little more often, you might go an extra lap, etc. If you join a few groups or add friends, you can put up some challenges and "compete" against each other which makes you drive a little extra.
I think it registers steps well, has driven a few bike passes and walks outside and then it runs GPS via the mobile and then can see afterwards where you have gone etc, works fine I think.
Good battery life clearly, I have charged it 2 times and it is 2v since I bought it :)
It detects what activities you are doing and automatically starts that activity, for example, I ran the Crosstrainer and then it automatically recorded that activity and the time was so close to the second when I started and ended. Likewise walks!
Bicycle it has not recognized. Nothing else I have tried.
What is bad is:
Sleep registration is not the best, I work shift so for me it does not work at all when you have to set it "when do you usually sleep and wake up", I who work night sometimes then it says that I did not sleep at all, ie it does not feel automatically that now you sleep and start raining it. Have you told it that you usually fall asleep at 23 then it starts automatically and think that now you sleep, you sit on the sofa and watch a movie then it starts to register that you sleep, then it may be that you sleep at 10 o'clock hour in the night but in fact you only slept 7 because you were up a little longer watching TV.
Once when I was going to start the GPS for cycling it refused to start even though the weather was the top and I was standing in the middle of the road.
The sync has hung and I did not get it started, I solved it by downloading Garmin Express to the PC, synced there 1 time thereafter the sync worked again on the mobile, however I have a difficult message left (Connect sync service) it says and I can't get rid of it even though the sinking is working.
I am happy and like the clock, however, some things that do not get it 10/10