The advantages are clear: relatively quiet, comfortable life of the battery for the week, fast loading, easy synchronization via the headphone jack, applying well thought pedometer rather precise level distance after calibration.
Strava I use to track my running races and sync between the two is automatic.
I absolutely love the alarm via the bracelet, less violent a revival of classic hits and super quiet to wake up at a different time of her partner.
Except that with my former band, I had a real silent vibrator. There, I end up with an unpleasant metallic sound possible. Having made my first purchase a competitor of Amazon, I spin exchange in stores. There followed a discussion in which the adviser has mocked my request (yeah Mr, you do not wear ear; what I said to 120 the bracelet, I must have the right to require a product in perfect condition with a silent vibrating as it is written on the box and as is the case for my partner). In short, it gives me another repackaged even dysfunction. I asked for a refund is in my withdrawal period.
Having at heart the wake WHISPER function, so I dropped the sign and thought to myself that maybe I would have a series Amazon is not dysfunctional. No bowl, same problem.
My partner is not using the clock, we exchanged bracelets. But I have a slightly bitter satisfaction: 100 the bracelet, there is a 4 vibrating properly. Provided it never fails, because if I did an exchange, it will be again the lottery.